Civil Rights Act of 1866
The Civil Rights Act of 1866, , enacted April 9, 1866, was the first United States federal law to define citizenship and affirm that all citizens are equally protected by the law. It was mainly intended, in the wake of the American Civil War, to protect the civil rights of persons of African descent born in or brought to the United States. This legislation was passed by Congress in 1865 and vetoed by U.S. President Andrew Johnson. In April 1866 Congress again passed the bill to support the Thirteenth Amendment. Johnson again vetoed it, but a two-thirds majority in each chamber overcame the veto to become law without presidential signature.
Murders of Chaney, Goodman, and Schwerner
Lyndon B. Johnson and civil rights activists used the outrage over the activists' deaths to gain passage of the Civil Rights Act of 1964, which he signed on July 2. This and the Selma to Montgomery marches of 1965 contributed to passage of the Voting Rights Act of 1965, which Johnson signed on August 6 of that year.