I don’t know what the number of murders committed by “illegals” is.
It does seem like the gun is the weapon of choice for all a$$holes, red, yellow, black, white, permanent resident or illegal alien when they want to transact violence they aren’t man enough to pull off on their own.
Seems like all the “good guys with guns” spend their time on Internet forums complaining about having their guns taken (they won’t be - it’s a scare tactic propped up by the NRA to drive their loyal and dumb subscription rolls) than they do stopping crimes like they claim they might / coulda / oughtta.
The real point to all of this is that the majority of numbers you see bandied about here posted by the usual suspects are blatantly wrong and based in about as much reality as Star Wars.
In conclusion, yes, everyone is against gun violence transacted by people who aren’t supposed to be here.