Only in America, can one word cause so much anger out of NOTHING.
I'm sorry to just sweep your entire country with that, but the bottom line is that your country is so dedicated to be politically correct that you brush off all intent and all common sense in pursuit of seeming just and righteous.
Here in Europe, that tweet would literally raise an eyebrow on most people, they'd exclaim "Well that was a shit joke" and move on. I'm not saying Europe is better, but on this point, on social interaction and competence, Online America has evolved and de-evolved to a prude society.
Just to stoke the flames, let's take feminism as an example.
I absolutely love what feminism stands for; It is a group of people who are fighting to straighten out some preconceptions that are not alright and improve society for all mankind.
I can debate with a feminist for hours and gain insight in things I've never thought about.
But if you take a place like Sinfest(webcomic), their forum is so hyped up about the idealism of feminism, that there is no space for reason, reality or responsible behaviour. They thrive on mob mentality and are turned completely inwards.
This, is happening here on the Escapist forums as well, you simply can't have a reasonable mature debate without someone judging people one or the other way, from either perspective. Ironically, it is the absolute minority that is actually misogynist, almost no one dismisses women completely.
I'm willing to bet that someone will quote me out of context and accuse me of hating America or pretending that Europe is a far superior place or that it's not true of every place in the US or something else that's completely irrelevant to the discussion. Even when I write this, they'll likely skip reading my entire post and just focus their inferiority complex or need to point out the obvious, on/to me.
This piece of news is just the latest global example of the complete lack of social competence and common sense that people have. And no, you're not socially incompetent because you dislike the tweet, but you are if you think it's important to fight against this "injustice".
Like Bob says, just shun them. It's that simple. Unsubscribe from them, ignore them. But don't react to it and don't tell them how offended you are, because the second you followed The Onion, you chose to get satirical and stupid commentary from a low-brow comedy institution and you should've known better.
If some asshole quotes me out of context on this, they are a **** and a half