Most of the "classic" ball clubs have a deep undercurrent of racism that is going to take a LONG time to finally be rid of. It's not usually blatant and pretty easy to avoid, but far too often it's the first thing some people go to when they're pissed at a player or manager. Boston, New York and Chicago are probably the biggest culprits in that area, probably in that order. Yeah, of course it's not everyone, but those are some old teams with some HUGE fan bases, and some of these racist goons last generation after generation.