Anti-oppression training is a vaguely Stalinist-sounding program that has been urged by several campus protest groups over the last several years. It is difficult to define, but not very popular. Thanks to SHOCC, it is now a somewhat mandatory part of NSOP. Thanks to the 2007 hunger strike, incoming faculty have to deal with it too.
Columbia being the multicultural institution that it is, few participants in anti-oppression training are actually oppressors.