European countries detain and deport immigrants who are illegally present all the time. The level of it can be discussed, but what's happening in the US is that they've detained hundreds of citizens and deported immigrants who are present legally because they said something the people in charge didn't like. I'll skip that part, thanks.
These are not people obstructing or harboring fugitives. They're people who ICE believed "looked foreign" (aka weren't white) and ignored them when they said they were US citizens. They spent days locked up simply because their skin is too brown and they speak with an accent.
It's absolutely disgusting. Educate yourself about what's actually happening out there.