Why Tennessee Tried to Ban "Civic Biology" in 1925: The Butler Act and the Evolution Fight

The Law: Butler Act (1925)

Tennessee made it a misdemeanor to teach "any theory that denies the divine creation of man as taught in the Bible" in public schools. Civic Biology (by George Hunter) was explicitly cited as a prohibited text.

Four Drivers of the Ban

1. Fundamentalist Religious Conviction

Rural, Protestant Tennessee saw evolution as a direct contradiction of Genesis. Teaching it = attacking faith.

2. Fear of Social Darwinism

Many conflated biological evolution with "survival of the fittest" applied to society—justifying racism, eugenics, and laissez-faire cruelty.

3. Cultural Traditionalism

Tight-knit communities viewed outside scientific ideas as threats to identity, morality, and parental authority.

4. Limited Scientific Literacy

Most citizens lacked exposure to modern biology. The biblical account was the only framework they knew.

The Aftermath

  • Scopes Trial (1925): John Scopes convicted; verdict overturned on technicality
  • Law repealed: 1967
  • Supreme Court: Epperson v. Arkansas (1968) struck down all such bans

The Butler Act was a cultural panic response—not a scientific debate. It revealed deep fractures in American society that persist today.

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