A bit off-topic, but the subject brings to mind this famous remark by Oliver
Wendell Holmes, writing to uphold the Virginia law that authorized the forced
sterilization of "feeble-minded" persons:
"The principle that sustains compulsory vaccination is broad enough to cover
cutting the Fallopian tubes. Three generations of imbeciles are enough."
Further background info and discussion here:
http://en.wikipedia.org/wiki/Buck_v._Bell