Gun controls only control law-abiding citizens. Do you think someone desperate enough to shoot four policemen cares about gun control laws?
Please don't confuse these idiots with fact and logic, that has no place in the leftist's minds, only feelings do. In the twisted views of the libbies the "perp" is never to blame, they are always the victim.
It also empowers the security bureaucracy, to an extent, it helps justify a larger existence then would be.
More laws=weaker citizens=more crime=more need for government security=more jobs=more taxes=less business=more economic poverty.....
Rinse, lather, repeat.