So far, it's been grandmothers, Ice Cream vendors, people waiting for work, literal children
(slrpnk.net)
Also, if ICE was only going after the "real" criminals, what the fuck do we need ICE for? We've already got a stupidly-overfunded law enforcement and prison apparatus.
The fact that we need a separate agency to go after immigrants pretty much admits that the intent is to go after non-criminals.