> But they are trying very hard to not throw all brown people with an accent into detention centers
Are you sure about that? There's quite a bit of evidence to the contrary, starting with the really high false-positive[0][1[[2][3][4][5] rates of facial recognition, especially among people of color.
In fact, as the studies linked below show, people of color are misidentified (i.e., false positive) more than 1/3 of the time. That's not nearly accurate enough to round folks up if 10 of every 30 arrested, detained and potentially deported actually aren't the folks you're looking for.