I would encourage religious groups to go into the science classroom, and give battle over the teaching of basic scientific facts. This is starting to work, but we're just not getting the message out effectively enough to suit me. I would look at a planet bathed in innumerable TV transmissions, and know exactly where my forces needed to come into play. Hollywood, here I come. I would try to ensure that the entire population watches television, instead of reading books.
Books can put profound ideas into their misshapen heads, television can only titillate.
I would ramp-down their attention spans, until it was insufficient to let them learn anything of worth. Manipulation of television could further our earlier plan for making science nerdy. Portray scientists as laughable, abnormal social misfits who can certainly cause lots of trouble, but can never participate in the solution. If anything, make them an impediment to saving humanity. This will have the pleasing effect of reducing the risk of real scientists going off and saving humanity.