You must go read the chilling and amusing account of Jamie Bernstein and Ken Reibel's visit to the AutismOne Conference in the Chicago area. The story has all the elements. Horror:
(that's what they were forced to eat); Police Absurdity (though not brutality); Screeching Breathless Paranoia; Jenny McCarthy; and Chemical Castration.
The story is told by Jamie across two blogs: Autism One, Part One on Skepchick and How I Got Kicked Out of the AutismOne Con: Part 2 on Friendly Atheist. Ken Reibel gives his version of the events here.
They were worried she'd infect healthy people with her strange ideas unless they were innoculated against ...
Damn you secular humanists, now you've got me doing it!