I'm glad someone brought this up, because I honestly find these sorts of aggressive sidewalk salespeople to be much worse than any panhandler. I've had them walk directly into my path, forcing me to walk around them or stop and I think that level of obstruction is asinine. I'm kind of an anxious person and someone moving that aggressively to block my path sets off my fight or flight very badly. Reminds me of the behaviour of the perpetrators of beatings I took in school.