- A billionaire Columbia grad said college students have "shit for brains" for not supporting Israel.
- The hedge fund boss said he gave millions to Columbia, but he may now stop his donations.
- He said he asked the university to fire a professor who called Hamas' terror attacks "awesome."
A billionaire who gave more than $25 million to Columbia University said students had "shit for brains" for not supporting Israel, and he may have to donate elsewhere unless he sees a "change.'"