Read other letters about this article
Its the same reason why Nazis and Communists attacked science and journalism (vis-a-vis whatever their dominant hate ideology was)
To illustrate:
Part of the reason we got the bomb before Germany is because Germany rejected the cutting edge research of the Jewish scientists who were doing ground breaking workin in nuclear physics as being "Jewish" science.
In Stalinist Russia, Mendelian genetics was rejected because it was said to believed to be "capitalist" science.
A lot of Americans don't believe global warming and evolution because they think its "liberal" science.