I don't fuck with people out in public. Period. I don't fuck with people in general. Period. So if a bunch of black chicks started trying to make a dick out of me in front of the world, if ANYONE started trying to make a dick out of me in front of the world, they'd get a face full of wasp and hornet spray and my steel toe in their guts before they could even finish the word "CRACKER!"
Yes, I carry wasp and hornet spray. Yes, I would recommend any student or traveler with a bag do the same. No permit required, exposure to the eyes requires chemical neutralization, and with even a miniscule amount of that sticky yellow foam shit in your eyes you will be blinded and in excruciating pain until you get it out. Water won't help either.
(Plus you got a stream of like twenty feet to work with too.)