Throw change? Cayanne pepper? Beat them with a umbrella?

Good grief, man! Grow a pair. Arm yourself properly. Don't bring an umbrella to a gun fight. Just because the PHRASECENSOREDPOSTERSHOULDKNOWBETTER. have had their way in disarming honest citizens doesn't mean the riff-raff have cowered to their demands. The riff-raff are packing heat and you better too if you ever have to hoof it home during a SHTF event. Otherwise you're toast. (Be sure your will is current)

Ken, you have the right idea. Get a gun! Check out the Kahr in .40SW.