I agree we don’t know all the facts, and I’m not an attorney but For your own benefit in the future let me assure you the statute that says they can : “(1) to interrogate any alien or *person believed to be an alien* as to his right to be or to remain in the United States;” Needs to be a reasonable belief based on something. It not an excuse to detain for any reason. Based on what we know I hope she does sue, on appearance I don’t see what reasonable belief they would have had to arrest her for being outside her apartment. Proximity to your apartment doesn’t make you more or less likely to be in the country illegally. The best I can do would be to say they had evidence that there were a lot of illegal immigrants living in the apartment. But I don’t think that would hold up as it’s not specific enough to her. It’s casting too wide a net to say “because I know a lot live in this apartment I can detain anyone without a warrant for this enforcement” That’s my problem generally, on appearance these are warranties arrests without probable cause. And it’s not just an inconvenience it’s a violation of the 4th amendment protection against unreasonable searches and seizures. Violence isn’t going to be seen as legitimate against the state until if the magic undefined tipping point where the state looses its monopoly power on violence because they are clearly violating constitutional rights is reached. Some segment of the population is protesting because they believe there are constitutional violations happening in mass. It’s interesting to watch.