On the opposite side, I think people who live in the city or place they have a shirt of shouldn't wear that shirt in that city or place. Unless it's a holiday(4th of July, USA, sure, no problem), or a sport team is doing well at that moment We have MILLIONS of people who are from San Diego wearing San Diego shirts IN San Diego. It's THE MOST BORING THING. Like yes, we're all aware of where we are. Who are you trying to promote San Diego to? ME? I was born here. Go wear San Diego shirts in Pennsylvania, tell them about San Diego. It's great.