Well for one, the 13th amendment to the constitution of the US which abolished slavery - did not abolish slavery for those convicted of a crime.

On April 16 2009 Angela Davis was the keynote speaker at the University of Virginia Carter G. University of Wisconsin – Madison Madison WI 2000. Angela Davis: Soul and Soledad.

She was twice a candidate for Vice President on the Communist Party USA ticket during the 1980s. She was tried and acquitted of suspected involvement in the Soledad brothers' August 1970 abduction and murder of Judge Harold Haley in Marin County California.