Valid question. Perhaps 'encouraging' instead of 'forcing' would be a better term.
Eric Holder is encouraging them by refusing to prosecute the Black Panthers... for anything.
Obama is encouraging them by saying, "if they bring a knife, you bring (already have) a gun".
Does that explain it a little, or should I go on?
No, that makes sense. Thanks for helping me understand. I knew I had to be missing something!