Earlier quoted context omitted.
Replace "offend the wrong person" with "do something really f*cking stupid" - which is what she did - and the outcome seems fair. No one deserves to be bullied or harassed but consequences need to exist to actions.
It appears that a big part of this discussion is about how we as a group are not sure if it really is a situation in which she "[did] something really f cking stupid", though. Clearly, you do interpret her statement to be an offensive, racist remark, but by her own admission, she instead was commenting on how "[l]iving in America puts us in a bit of a bubble when it comes to what is going on in the third world. I was…
At some point in life we all realize that we're not as funny as Steven Colbert, we're not as good looking as Brad Pitt, etc, etc. When you come to that realization, learn your limits and don't try to pull off a racist joke or wear a speedo to the beach. It's unfortunate that she had to learn this lesson in such a painful and public way. She was clearly in the wrong, but I don't agree that mob justice fits the crime.