as for the guy being ignored on the street, that's the safest thing to do when you see your average crackhead passed out on the curb.
next time you see a person laying on the sidewalk, you just go and see how well off you are checking his pulse. i bet you will get mugged/killed by him.
just as our homeless friend here has just proven, if you play the helpful person, you get burned.
mind your business and your happy, let the trash kill themselves off in stupidity.