What he said.

For the pacifistic anti-gun dumb asses on the internet who always crop up in the aftermath of any violent event, bitching about imaginary crossfires, or how fighting back would just make things worse. Just shut up already. You’re children, with a child’s grasp of the subject. When people are being mass butchered, barring tossing hand grenades at the bad guy, it is pretty damned hard to make it worse.

RTWT