Some people carry pepper spray (except in liberal cesspools, where they would rather be victims). I used to carry oven cleaner, as that does PERMANENT damage. If you don't fancy a gun (it's nobody's effing business WHAT is in my pocket), I would suggest you keep take a wide berth of corners or, at least, approach them cautiously. I also apply the mental attitude, that I am going to hurt at least one attacker REAL bad. Believe me, they can feel the vibes and find more helpless prey.