I'd have to dig a bit for the specific details. But, I do know of several cases of prestigious universidads where leftist profs have dealt out failing grades for writting papers that go against the prof's leftest views. I've also heard it is almost impossible to get a grant at some of the top institutions to do honest/unbiased research on
man made global warming.
I know this is simple anecdotal stuff. I might dig later on for some specifics.