i just want to point something else out about deportations, though.
something you very frequently hear from the bourgeois left is that people should only be deported when they commit "serious" crimes. they never finish their thought, though - the idea is that their campaign donors (big agriculture, and other industries that rely on migrant labour) don't want criminals in their work force, so it's ok to get rid of them.
but, what are you really doing when you deport a criminal? you're essentially sending that person back to their country of origin to continue committing crimes, which is just a push factor on continuing the flow of people. is it really a good idea to send a rapist back to guatemala where they can rape people with impunity?
rather, it seems to me that the people who ought to have the best arguments against deportation should be the criminals, but that they should also be tried and sentenced for the crimes, as is appropriate, and then rehabilitated as is best possible inside of the country. and, if anybody should be working sub-minimum wage jobs, it's the criminals, not the law-abiding migrants. so, you put the ones that break laws other than immigration law in jail, and you process their immigration papers as is appropriate while they're in there. then, they get their decision when they get out: either they're approved and allowed to work for proper wages and benefits, or they're denied and sent home.
regarding the people that are being rounded up for no reason other than entering the country illegally, i'd present more or less the same argument. there are laws in place, and perhaps they ought to be changed, but they are in place, and they were democratically enacted and the ice is carrying out a legitimate function with them (so long as we have habeas corpus). if you've overstayed your visa, for example, then you've broken the law, and enforcing the rule of law means you need to pay the price for it. but, what that should mean is that your citizenship status should be determined while you're being processed, not that you should be deported offhand. so, maybe somebody that's overstayed their visa has to carry out a thirty-day jail sentence (which is probably appropriate for a crime of that nature), but they should be being processed while they're in there, and should have a clear answer when they get out.
but, protesting something like this doesn't make sense, and would be leaning more towards a concept of ochlocracy - that is, mob rule - than anarchy, which is supposed to maintain a concept of democratic decision making, whatever it is.