The fact that Americans are getting caught in the dragnet, having their possessions and lives destroyed, getting sent to secret jails or being assaulted for merely being in the same zipcode as an ICE agent doesn't matter to them. It's all about inflicting harm on people they dislike, and if ICE is harming someone then obviously it's because it's they did something bad.
It's pretty dire circumstances. ICE was always close to a paramilitary organization, it just took Trump to actually fund it and push it over the edge.