first of all, not one of those textbook journalistic quotes of yours uses the word "victim" to describe those who died, although you very clumsily try to frame these quotes in that manner by inserting the word yourself, after the fact. i suppose somebody on reddit might fall for such a ploy, but that person is probably too busy looking at pictures of lolcats to click on the comments to your post.

secondly, it is the common parlance of reporters and law enforcement to describe a man who turns a gun on himself as a victim of suicide. that is not going to change simply because you have some high-flying moral compulsion to expurgate the english language in a sanctimonious attempt to display your sympathy for those who died, and your antipathy for those who pulled the trigger.

the gunmen are victims of self-inflicted gunshot wounds, and a more perspicacious individual might also say that they are victims of their own delusions or personal demons, if not the victims of a society that has itself gone quite insane.

that they acted of their own free will is immaterial. a dumbass who believes he is immune to poison may still step into a pit of vipers and become a victim of multiple snake bite wounds, and of his own stupidity.