Co-founder of the Black Lives Matter Seattle chapter Marissa Johnson spoke with MSNBC's Tamron Hall about the group's action in taking to the stage during a Bernie Sanders rally Saturday.

Democratic presidential candidates Martin O’Malley and Bernie Sanders sat down with activist and journalist Jose Antonio Vargas at a Netroots Nation Presidential Forum and were interrupted by activists who shut the forum down to force the candidates to address the brutality Black women and men face at the hands of law enforcement.