You could say something, but judging by how frat ppl are, they won't give a crap after you leave. They still have that high school mentality so it probably won't register in their head. If you do, good luck.

On a side note, I view handicapped ppl as serving a different purpose in life. It reminds ppl that they should be happy for what they were given in life cuz others are not that fortunate. Its really a humbling experience to know or care for someone who has a disability.