PETA is claiming that milk causes autism and other diseases, and it causes health problems in autistic children.
Here's Steve Novella:
This is clearly, in my opinion, a campaign of fear mongering based upon a gross distortion of the scientific evidence. The purpose is to advocate for a vegan diet, which fits their ideological agenda. They are likely aware that it is easier to spread fears than to reassure with a careful analysis of the scientific evidence.
PETA's sloppy play on words for the "Got Milk?" campaign is to write "has your child (in small letters) got autism? (in big letters)." Jeeze guys, don't you think parents of autistic kids have enough problems without your campaign telling them its their own fault for feeding them milk?