People have shot up an elementary school, people have shot up a country music concert, people have shot up members of Congress themselves, and still we cannot restrict guns. I can't think of another interest group that can murder every political constituency and still maintain its power. Incredible.
cops? maybe the only one they cant get away with is rich white people? unless those rich white people are the "wrong" kind of pol, in which case its fine.
Don't forget a church (and synagogue)... though one could point out, that if it was a white church, certain elements of the Gun Constituency might finally see the light (they won't, but nevertheless)