What is the name for the people on the street who often times work for a non-profit organization and usually are soliciting donations (but maybe doing other things such as collecting signatures for a petition, or just spreading information)?
You can usually tell who they are because they're wearing a uniform and holding clipboards and approaching strangers who walk by. I was just accosted by one and would like to know how to refer to them so I can relay the story to other people.