The frat boys have not been denied their right of free speech or any constitutional right.
They are of course free to sue OU, but they would likely lose after taking the stand and making asses of themselves.
I sense a theme. Do you perhaps resent those more fortunate than you? It is clouding your judgment.
Yes, they have a right to free speech by the OK Constitution. I agree that, pace the Left, it's not a Federal matter.