The hell it isn't!
My cousin went there, he's so far left, Lenin would be "right-wing".
Its about 50-50 overall, but has a large, vocal conservative section in the Corps. Our Chair of PoliSci (Ilja A Luciak) is about as red as they come (his family is literally the enablers of dictators. Grandfather was Swedish ambassador to Germany in 1930s; uncle sold the boat that took Ernesto Guevara and Castro to Cuba; he hangs out with Daniel Ortega and Castro.)
But we cadets always looked for ways to ruffle feathers. Especially when some of our Iraq/Afghan veterans were in classes that discussed the wars and they got to go head to head with some punk ass 17 year old freshman who starts talking out his ass. Good times.