Actually, we can take this a step further.
Why would any of us claim that today's professors are so left wing? Or, more correctly, why would we deny this?
Only one on these boards would be inclined to give a BIASED response.
John, you're so busy denying the charge that you fail to see the inherent bias.
Heck, most professors are likely to the right of your views. But that doesn't make them conservative, or even moderate. They're simply less-left than you are.
And thank goodness for that.