Maybe they tried to help the drunken bum and he spit in their face or threw urine at them. In my opinion when people are staggering around in homeless garb smelling of vomit there is a reason.
Karma. Heh. Are the consequences of a belief in a divine plan of any religion this complicated to understand? If Pa Karma really is a bitch, who am I to step in his way and assist miserable homeless guy whose pathetic situation is most likely explained by Pa Karma being his justifiably (per you) bitchy self for homeless guy's past misdeeds? If you believe in Karma, you just have to let it play out and let people get their just deserts... or admit that there is no divine retribution.
^ Feeling pasty? Check out our high-powered tanning beds at Just Deserts! Next to the '76 in Gresham. Tell 'em Pa Karma sent you and we'll throw in some divine retribution absolutely free.
Well, congratulations.
For still being alive.