For once, something I can agree with coming out of the government ordinances realm.  Yes, by all means, make the entire downtown smoke free.  It is not discriminating against people without homes.  It is discriminating against people who want to pollute the air with their toxic waste.  Were I mayor, I would ban all of the coal trains and cars as well from the downtown.  We need a clear air, clean water, city where people can work, live and breathe safely.