evil implies the only way to beat them is to be "good'. it demonizes them into being monsters, which is no different than what they do.

a better term is reprobate.

an unprincipled or depraved person

Evil is a nebulous term that can be applied by anyone to anything.

Similarly, calling them vile disgusting filth doesn't work, as it could be used by members of ICE to describe the innocent men women and children they abuse.

We need a term that satisfies several criteria.

It must be true, in so far that it is inarguably applicable to any member of ICE.

It must be understandable at a 5th grade reading level, because this is America and that's as good as most of his supporters can manage.

And it must not be applicable to the victims. Therefore the term cannot be purely emotional. But evoking an emotional response is kind of the goal.

Idk how about Genocide Squads?