After a few months I managed to find a place in the city and would ride the (pet-friendly) bus with my 90-pound samoyed, who despite usually being anxious in crowds took to it really well.
Long story short, the dog was an amazing cross-class ice breaker. I'm pretty introverted, but just about every trip someone would strike up a conversation with me, and it was usually folks I wouldn't otherwise interact with.
So anecdotally, usable public transit can be a good class desegregation strategy, and taking a charismatic dog with you supercharges it.