My suspicion: Their stream of hate speech will not find an audience. Students will steer a wide circle around them. It will all die for lack of a second.
Ignore them. Respond with no response at all. Focus on something that matters.
Tim has the right idea. Do not stoop to the level of hate, but spend your energy and your passion in something which matters … which is exactly what Mizzou students did:
… to which I can only add this:
Go, Tigers, Go!
Feeling rather proud of the young folks in the Heartland ….