The order and timing in which things happen is extremely important.

What terrifies Trump right now is the midterms. This is how he can get impeached and ultimately go to jail along with all his inner circle of traitors and Nazis for everything they did. He will use any excuse he can come up with to cancel those elections.

If you serve him one on a silver platter like that, he will absolutely use it. They will call the ICE officer(s) who got killed a "hero" and politicize the shit out of any event where a citizen shoots at then. Then they'll cancel the elections for (security reasons).

It will be a heck of a lot harder for him to do that if we don't give him that reason. I would also make it far more unpopular of a move everywhere among the political spectrum and ranks. This would also be the point where the idea of an armed revolt becomes far more popular as well.

The more the rubber band is stretched before it finally goes the further it will go.

Edit: Figures, the guy who wishes instant gratification with zero thought about effectiveness also downvotes the post that disagrees with him with a better developed opinion.