And that above all is the point. People are scared shitless to express their opinions and ideas for fear of being ostracised.
And it's extended past the school or the workplace, now nothing can be said lest it offend someone.
Take this for example: If you're a white and you critisize affirmative action, or say it works against you, you can be called a racist.
I don't call that racist, if he dropped the N-bomb then yes, he is, but he shouldn't be condemned for speaking a fact.