The US is pluralist because of "hypersensitive" minorities, though. There will be over-corrections, but becoming hostile toward the offended party in those situations will exacerbate the problem. That's my disagreement with the attitude of the OP. If you accidentally offend someone, you can easily apologize for being unaware of their needs, if that was the case. Perfectly informed sensitivity is impossible, so this is really the only viable option if you don't want to make an ass of yourself every so often.
He misunderstood the topic the op was talking about, and came over to complain. Why should the op have to apologize in that situation? I would just clear the thing up, explain the actual topic was a game, not dwarfism, and then the situation should be resolved. Ideally the other guy should've stood up and apologized for just assuming things without actually knowing what the topic and talk was about.
Let's blame the victim, then?
It's pretty hard not to when the entire act of being offended is because of a person's personal feelings and ability to deal with them. It's not as if everything is separated into strict categories of offensive and not offensive. It's in the eye of the beholder.
+1
I dont argue against the fact that prosecution, mobbing and hatespeech against minorities is bad. But the op's example and the stuff about created content is an entirely different matter. Its usually pretty obvious when someone actively degrades and speaks against minorities. If someone calls you a freak on a regular basis and demands that you'd be outlawed from society because your perceived identity differs from their expected one, that sucks and is disgusting. If you are denied a Job, a place to live or decent treatment because of your race/gender/opinions/whatever, i'll be the first to say its bullshit.
But what I take issue with is people waltzing into conversations, geting vocal over comedy and jokes and then wondering why noone sympathises. When it comes to stuff like a Youtube Video or a Blog/Webcomic, there _Is_ a way to just "Walk away". Hammer that red X on the top right and you never have to hear/read said content again. Alternatively, leave some constructive critique in the comment section, but then you have to deal with the fact that not everyone agrees with you and perceives the content the same way.
But most of the time, people opt for the "Im so offended at this." approach, insulting the creator and the viewers/readers, spewing insults and starting fights, throwing around labels and then crying foul when they do not get the expected response (See the Penny Arcade-thing). Its those people that upset me. The very same dude that sits at said Bar, hears the word "Dwarf" and just assumes that there is someone insulting him for being short, and then comes over to act outraged.
Both "Extremes" suck. It shouldnt f-ing matter how you look, what gender or race you are or whatever. But it also angers me that we live in a society where "Im being offended" are the magic words for entire websites to grind to a crushing halt, to adress this percentage of people who couldnt handle a joke. And any argument you start is instantly shot down by people hiding behind their morale-crusade to make everyone aware of their own personal problems.