You are a classic over-reactor. Show me when I TOLD you how to live. I merely suggested advice, seeing that I am one year ahead of the program that you are going into. But if you would like to be inflammatory and defensive because you don't agree with the truth, it's your decision.
There are plenty of my classmates who "party hard", but I can tell you that none of them are on SDN posting ridiculous comments, are calling their own school racist, etc.
You SHOULD care if they check and you should care what they think. You put on your little admissions act (like we all did) and got accepted. You at least owe the school, our faculty, your classmates, and the profession the respect they deserve. If you're so confident and in-your-face about your opinion, why didn't write all of that in your personal statement and show them who you really are. Or, maybe you did talk about all that in your essay: "Dear MWU, I think you are racist, I can't wait to sleep with my classmates, I don't care what you think about what I write in online forums, and, oh ya......thanks for the acceptance."