And they're free to propose legislation changing the laws any time they want. But what they're doing is crossing the lines between free speech/protest/civil disobedience/outright law breaking.

As long as they're just speaking/recording/making noise, they're fine. If they actually physically stop the ICE people from doing their jobs, then they're breaking the law.

Yeah, well here's the problem: so many DON'T show up for their court dates. What do you do with them? Or should the policy be to just look the other way, regardless of what the law says?

If they don't show up for their court dates, then go after them. If you have the ICE agents waiting at the courthouse to specifically target the folks who are trying to comply, which is what they've been doing, then your policy is going to have some very deserved criticism. Because the people who are voluntarily walking into the courthouse to comply with their hearing notices are typically not "the worst of the worst." And if you deliberately target them just because they're easy targets, then you're actively discouraging everyone to voluntarily comply with their hearing dates - which is presumably the opposite of what you want.

Again, this is not rocket science. Differentiate. If the country is filled with unauthorized people that are the "worst of the worst," go after them. Don't go after the random father of two who voluntarily keeps to his appointed court date.