I'm kind of with Lasastryke on the racism one. I think racism is inherently wrong, and I feel like people can have a freedom to only serve products to those they want to, but there is a limit. If the bartender said he didn't feel comfortable serving the guy and asked him to leave, that's one thing, but forcibly removing him violently isn't something I'd say is fair.
If companies can do whatever they want on their property I'd be scared to go into some stores knowing I could get beaten for no apparent reason.
I think right now this concept is in favor of affirmative action and racial oversensitivity, but the opposite extreme is just as undesirable.