Many of those actors are anti-gun because "guns kill children", when in reality they may have contributed to those deaths by their display of poor firearms safety.
Regardless of whether the movie is a serious drama or an action flick, many actors portray police officers, FBI, DEA, armed forces, etc. and they are doing a piss poor job of it. If my job was to depict a character, I would do it a hell of a lot better job than most of those "actors". While I detest Tom Cruise, I have to give him credit for his portrayal of the antagonist in "Collateral". The Briefcase scene seems to be quite well done.
Fly