A Confession of Liberal Intolerance

The New York Times reports "conservatives aren't welcome as professors" :

Four studies found that the proportion of professors in the humanities who are Republicans ranges between 6 and 11 percent, and in the social sciences between 7 and 9 percent.

Conservatives can be spotted in the sciences and in economics, but they are virtually an endangered species in fields like anthropology, sociology, history and literature. One study found that only 2 percent of English professors are Republicans (although a large share are independents).

In contrast, some 18 percent of social scientists say they are Marxist. So it’s easier to find a Marxist in some disciplines than a Republican.

Is there a "disparate impact" lawsuit for someone?