If they are just peacefully walking along and holding a sign, why would they be stopped and subjected to a police check? If it’s peaceful, I think police should just say “stay away from the front of the ATMs” or whatever, and tell them to be on their way; BUT if a person is destroying property, causing harm, injuring others — i.e. rioting, YES, they should be deported if they are here illegally. Duh. Congress has never tackled the details of our immigration laws and adjusted them or demanded enforcement of them, as the tons of illegal immigrants have been pouring in over the decades, because they didn’t want the political fall out from it. So, there you go, change the law if you want a different outcome.