Even if they are gang members they still should have due process and a trial. This is one of the foundations of our legal system. Where does that leave us if we just leave it to law enforcement to throw anyone in prison without any oversight? That’s straight up authoritarianism you’re arguing for.
How do we know they all have tattoos? There was no trial and we only have the worthless word of an administration that lies constantly. Why are you so trusting of a proven liar?