Ideology is the death of thinking. One of the great ironies is that one of the most ideological philosophies is Marxism - which, of course, is based on materialism. In fact, more often than not, I find most of the ideological critiques to be based on a sort of crank-turning nihilism that is always moving-towards-death.
This is basically in response to Coffeen's post about the manner in which someone should critique. Being in academia is an existence that fluctuates between utter boredom and sublime enthrallment. I love when I hear critiques that make something old look new - something familiar look weird. What I hate, despise is critiques that squash difference. "Hey look how this is about my theory too." Now, to be fair, I've done this too. For quite a number of years, everything I saw was proof that Heidegger was correct. But I think, I hope, I've grown out of that.
Perhaps the problem is that academia thinks it's job is about changing something - fixing the evil capitalist, racist, sexist ideologies that exist. Now - to be fair - we have helped that, a little, maybe, I think. But what we should be about is making texts exciting - making people want to read these texts that make us think and rethink. There's no reason to tell a person what a text must mean - but there is nothing more beautiful than showing someone how a text can mean - how it can go and hopefully how it can go in many different ways simultaneously.