Nothing here is either surprising or unpredicted. It's just ugly because it's finally happening.
If I were a man given to being suspicious, I'd swear that the whole time using these technologies for "street criminals" and "gang members" was never about "pacifying inner-cities" at all. I'd be inclined to think that maybe it was just the equivalent of the beta test.
But I'm not given to being suspicious. So I know that whole way of thinking is just nutty. right?
All of what we're seeing is built on an electorate that was primed to elect Trump. The Republicans had been using them as a captured base to enable their neoliberal and imperialist policies, but they'd conditioned these folks to want Trumpism, not what they were actually delivering. The shit Trump says is largely the same shit you'd hear from Republican voters since at least the '90s, and what he does is largely shit they want done. They've been asking for e.g. authoritarian federal government crack-downs on cities since then, asking for reductions in law enforcement accountability, asking for no-due-process mass deportations, asking for pulling back from NATO, asking for a wall at the border and/or a militarized border, et c. Their media's been telling them all democratic organizations and the party itself are to-the-core rotten criminal enterprises and they believe that. They will cheer when ICE starts arresting members of congress and major democratic donors on dubious charges.