From Slate Star

Having only things you don’t like repressed looks from the inside a lot like there being no repression at all.

and

There are taboos in history, too, and in economics, and in political science, and although they’re less obvious and interesting they still mean you need this same skepticism when parsing results from these fields. “But every legitimate scientist disagrees with this particular Reactionary belief!” should be said with the same intonation as “But every legitimate archbishop disagrees with this particular heresy.”