Just like the title says. 'Am I in the bad part of town?' Tourists shocked by what they see on San Francisco streets "The streets are filthy. There's trash everywhere. It's disgusting," Joe D'Alessandro, president of S.F. Travel told the Chronicle's Heather Knight in April. "I've never seen any other city like this — the homelessness, dirty streets, drug use on the streets, smash-and-grabs."