If they were getting gang members the protests would be useless because tactically they would be in and out every time before anyone could protest their operations.
My argument is that if you have two injustices A and B with severity of lets say 50/100 and 90/100. And injustice A is being globally protested, but injustice B is ignored, then your fight is not for justice, then you are being used as a political tool.
It sounds like you don't really care about the law, or people that want the constitution enforced, you care about the politics and if it the Constitution is politically inconvenient. Following the Constitution is ALWAYS the politically correct choice in the USA. Choosing the law over 'civil immigration enforcement' used as a loophole to bypass the law/Constitution is always the correct choice.