I have to imagine that rescinding a (theoretically merit-based) offer of admission on the basis of private, protected speech would likely not look great in a courtroom, based on my understanding of how vigorously protected speech has been protected in public institutions by the courts in the past. Of course, if they had known beforehand and refused the offer with that knowledge, they'd be legally in the clear because nobody could prove it was primarily because of that, but after the admission, it certainly reads as something taxpayer-funded taking punitive action on the basis of protected speech, which seems, in principle, to be the kind of behavior courts have ruled negatively against colleges on in cases I'm aware of. (It's for this same reason that public institutions' "diversity codes" are often window dressing, as courts have ruled students can't be punished for protected speech by schools in the past.) At the very least, I think there would be a case to be made, though of course the smart, moral thing would be for the kids to take the L and not be such morons next time.
They
were
making fun
of dead children
You can try to rationalize this all you want, thats your right but i feel its in bad taste. Especially since the punishment was already handed down. People that do this shit have a very broken moral compass. And yes, this type of shit drips over to "real life" after all this was all being shared in a group of the same incoming classmates influencing each other.
Fuck 'em.