In some cases, there are people who were brought here through no fault of their own, as unemancipated minors (ie. DACA kids). This administration treats these individuals just like everybody else, and on a moral level, it is just wrong.
There's no sugar coating it. A person shouldn't be locked up and sent to El Salvador or Libya or wherever under any circumstances, but this is especially true of people who ended up here through no fault of their own. Seems like a pretty obvious point.