You would be hard-pressed to find a more inflammatory topic than intelligence, one more mixed up with ethics, morality, public policy, and strong opinion. Like most stuff that involves politics and strong opinion, the loudest voices are often the ones who know the least about the topic. The ‘discussion’ surrounding evolution is another fine example of this pattern.
Anyway, this article on an article on intelligence re-opens the wound. Worth reading as a quick state-of-the union on what is still a hugely contentious topic.