http://en.wikipedia.org/wiki/Dred_Scott_v._Sandford
http://www.streetlaw.org/en/landmark/cases/dred_scott_v_sandford#Tab=Overview
http://www.pbs.org/wnet/supremecourt/antebellum/landmark_dred.html
http://www.britannica.com/blackhistory/article-9399842

Here is the link for the John Brown video.

1. Is it okay for someone to be violent to people they like are doing something bad?

2. Is there a difference between John Brown and the terrorists of 9/11 or the Boston Marathon Bombers?