I circled twice, but a group of people were yelling at me to get lost.
I lived on "Crack Alley" in KC many years ago and learned that if you respect them, they'll respect you. The ppl who had a "better than thou" or a paranoid attitude got messed with.
This is how I'd handle it: I'd get out of my car and walk up to them and say "hey, this is what's up with me - I just need to take a picture of this house - what's up with you? Would you like to be in the photo? haha! This'll only take a sec."
If they know you're cool and you're not out to get them or insult them with attitude, they're totally cool right back.
I'm more frightened of homeless people because they're likely insane and I'd never try to get around them.