Slavery happened from 1619- 1865 when the Civil War was won by the North in the 13th Amendment. However there was segregation under the Jim Crow laws that separated black and white people in public, on buses and in school.
This was prevalent under the Civil Rights Movement under Martin Luther King JR in 1955. However there is still mass incarceration for unjust causes which mainly effects black people who are being imprisoned to make money.
Common says that slavery has not truly been abolished as many people are being imprisoned for no reason which provokes movements such as Black Lives Matter.