Throughout time, societies have often embraced practices that, in hindsight, reveal our complex and sometimes dark relationship with morality and ethics. The once accepted act of smoking in public spaces and the endorsement of child labor reflect changing societal values over time.
Each era brings forth norms that, although widely accepted then, can become sources of profound regret and introspection. Here, we examine such practices, casting a light on the evolution of what is deemed acceptable by society and how these perceptions shift with advancing human rights and scientific understanding.
Smoking in Public Places

Once a ubiquitous part of dining, flying, and even medical environments, smoking in public was broadly accepted until the late 20th century. It was glamorized by Hollywood and seen as a hallmark of sophistication and stress relief. Research eventually linked smoking to numerous health problems, leading to widespread smoking bans and a shift in public perception.
Asbestos in Construction

Asbestos, once hailed for its heat resistance and strength, was widely used in building materials throughout the 20th century. Homes, schools, and offices frequently contained asbestos insulation, a fact known little about until severe health implications, like mesothelioma, became undeniable. This led to its ban in many countries, reflecting a dramatic turn in how its dangers are understood and legislated against.
Lead in Paint and Gasoline

Lead was a common ingredient in paint and gasoline for decades, admired for its durability and engine performance-enhancing properties. However, lead is highly toxic, causing a range of health issues from developmental delays in children to severe adult neurological damage. The eventual ban on lead in these products marked a significant public health advancement.
Child Labor

Industrial societies widely employed children in factories, mines, and fields during the 19th and early 20th centuries. These young workers often faced dangerous conditions for minimal pay, a practice justified by economic needs and social norms of the time. Child labor laws have since become stringent, protecting young individuals from such exploitation.
Foot Binding

In China, foot binding was practiced from the Song Dynasty until the early 20th century as a sign of beauty and status. Young girls had their feet painfully bound to prevent growth, a process that was both debilitating and revered as a necessary rite of passage. This practice was eventually seen as barbaric and was banned, highlighting a profound societal shift in standards of beauty and human rights.
Racial Segregation

Racial segregation, legally enforced in many parts of the United States until the mid-20th century, was a stark reality in schools, public transport, and other societal sectors. It was justified under the guise of “separate but equal,” though facilities for African Americans were inferior and underfunded. The civil rights movement led to significant legal and social reforms against this practice.
Witch Hunts

During the colonial period and the Middle Ages, societies across Europe and North America widely accepted the persecution of individuals as witches. These witch hunts often targeted women and used dubious evidence for accusations of witchcraft and heresy. The end of witch trials came with advancements in scientific understanding and a decrease in superstition.
The Divine Right of Kings

This political and religious doctrine asserted that monarchs were granted authority to rule by God, making their decisions unquestionable by earthly means. It justified the absolute power of monarchs and was widely accepted until ideas of democracy and civil rights gained prominence. The shift away from monarchial rule to more democratic forms of government marked significant progress in political thought.
Corporal Punishment in Schools

Physical discipline in schools, once a common method to enforce discipline across many cultures, involved teachers administering corporal punishment to disobedient students. This practice has been largely condemned due to studies showing its psychological harm and ineffectiveness. Many countries have now outlawed corporal punishment, advocating for more humane and constructive disciplinary methods.
Sati in India

Sati involved the practice of a widow immolating herself on her husband’s funeral pyre, either voluntarily or under social pressure. It was considered a sign of ultimate devotion and loyalty in certain parts of India until it was banned in the 19th century. This practice highlighted extreme societal views on widowhood and women’s independence.
Dueling to Settle Honor Disputes

Dueling was an accepted way to resolve honor disputes among men of high social standing until the 19th century. Participants would face each other with swords or pistols with lethal consequences often resulting. The practice fell out of favor as legal systems developed more civilized means of resolving disputes.
Lobotomies for Mental Health

In the mid-20th century, lobotomies were performed on individuals with mental illnesses to alter behavior, often resulting in severe, irreversible impairment. This radical form of treatment was seen as a medical solution to otherwise uncontrollable conditions. The decline of lobotomy use coincided with ethical reconsiderations and advancements in psychiatric medications.
Arranged Child Marriages

Arranged marriages involving young children are still practiced in some parts of the world, though they were once more globally widespread. These marriages are often agreed upon without the consent of one or both of the individuals involved. Growing global advocacy for children’s rights and gender equality is challenging this practice, highlighting its damaging impact.
Debtors’ Prisons

Until the 19th century, individuals unable to pay their debts were frequently imprisoned, a practice accepted in many Western societies. These prisons were harsh environments that offered no real solution to the debt issue, merely punishing the insolvent. The abolition of debtors’ prisons was a pivotal moment in the reform of justice systems regarding economic crime.
Colonization and Cultural Erasure

Colonization was a globally accepted practice by European powers from the 16th to the early 20th century, involving the conquest and administrative domination over non-European lands. This often led to the exploitation and erasure of indigenous cultures and systems. Modern views on self-determination and historical justice have led to widespread condemnation of these practices.
Animal Testing for Cosmetics

For much of the 20th century, it was standard for cosmetics companies to test products on animals to ensure safety for human use. This often involved procedures that caused significant suffering to animals without any anesthesia or ethical considerations. Shifts in consumer awareness and ethics have led to bans and regulations limiting or eliminating this practice in many countries.
The One-Child Policy in China

Implemented to control population growth, China’s one-child policy was enforced through fines, forced abortions, and sterilizations. While effective at its goal, the policy led to numerous human rights abuses and a skewed gender balance. Its discontinuation in 2015 marked a significant shift in governmental approach to population control.
Gladiatorial Contests

In ancient Rome, gladiatorial contests pitting combatants against one another in fights to the death were popular public spectacles. These events were seen as entertainment and a way to display the power and magnanimity of emperors. The eventual decline of these brutal contests came with the rise of Christian moral standards within the empire.
Disposal of Waste in Water

Industrial and residential waste was routinely dumped into rivers, lakes, and oceans, a practice unchecked by environmental regulations. This led to severe pollution and health problems for communities dependent on these water bodies. The environmental movements of the late 20th century spurred laws that drastically changed waste disposal practices.
Forced Sterilizations

In the early to mid-20th century, several countries implemented forced sterilizations of certain populations to prevent the transmission of undesirable traits, based on now-discredited eugenics theories. Victims often included disabled individuals, minorities, and those deemed mentally unfit. Recognition of these practices as human rights violations has led to apologies and reparations in some cases.
Banishment and Exile

Historically, banishment was used as a form of punishment that involved exiling a person from their community or country. This was seen as a way to rid society of undesirable elements without the need for execution. The practice has largely been replaced by more nuanced and rehabilitative forms of justice.