Cruz would debate him? C'mon. If Cruz wants to set up a debate and invite them, that would be the way to do it. But to let them take over a rally with their agenda? That's enabling bullies.
.
I can see that you don’t understand what is at stake any better than Trump does.
Telling him to shut up merely establishes the obvious: that you disagree.
Engaging and drawing them out as Cruz always does with malefactors allows him to establish for all to see what is wrong with their stance, and lays them to public shame, rather than letting them advance their cause in a forum that isn’t theirs to abuse.