Democrats know how bad this looks. The would-be Alexandria assassin is a left-wing true believer. In terms of his political beliefs (if not his actions) he's emblematic of the base of their party. His political goals are their political goals, and we're learning that he enjoyed a steady diet of the same hateful class-warfare rhetoric they use to win elections.
So, of course, they're trying to spin themselves clear of the idea that one of their own just tried to kill an untold number of Republican congressmen.
That's impossible, so they're left with only a few options. The first is to ghoulishly unleash the standard gun control boilerplate. The second is to deflect attention by equivocating between this shooting and others. The third, and most disturbing, is to offer a cursory condemnation of the shooters actions, while sympathizing with his motive.