They make a prime candidate for my "Don't hold strong opinions about things you don't understand" award.
There should be a word in the English language that describes that characteristic... maybe there is? anyone?
Anyway people who voice strong opinions about things they don't understand are a pet peeve of mine. I especially despise people who argue their fanatical opinions and beliefs even when they are in direct contradiction to known facts. This includes, but is not limited to, anti-nuclear environmentalists, peace-loving hippies, religious evangelists and the "moms who believe computer games are the cause of all evil in our society" crowd.