You're not really engaging seriously here, but "if voting doesn't work, what is to be done?" is actually the first (and too often last) political thought most people have outside of our mostly useless sham democracy. And you're right that fascists deserve to be shot (though you aren’t yet asking why Democrats' don't seem to believe that), so it's understandable your thoughts would go straight to shooting them.

What you're missing is that this whole conversation has happened countless times before, to the point where there's an established name for "well why don't you just go shoot the bad guy?": adventurism. A bunch of anarchists tried it against high-level state actors 100+ years ago and it accomplished nothing of note, and the consensus among communists is that it's a bad strategy. It lacks "stable or serious principles, programme, tactics, organisation, and... roots among the masses," so it doesn't develop into any systemic change (and makes your organization vulnerable to bad actors). Turns out you can't take a shortcut around building a mass movement.

Building that movement is the logical conclusion you're looking for, not random outbursts of violence.