This is a tough one for me to say, since in general I support street performers/buskers, BUT only if they have talent, and only if they show consideration for people who might need to work and/or sleep.
Example: there are some very talented bucket drummers out there, who vary their routines and have become part of the tourist scene. That said, there's a lot more to drumming than randomly banging on buckets, pots, and pans. I remember leaving the Garden after a Bob Seger concert (one of my all time favorites), and there was a bucket drummer there. Umm, I want to keep the songs of the concert I just got out of in my head (a 'fine memory'), not some random bucket drummer.