An old People for the Ethical Treatment of Animals [PETA] has resurfaced almost 10 years after it was launched - and has sparked outraged online.
The PETA billboard linking drinking milk to autism was taken down in 2008 by the Autistic Self Advocacy Network [ASAN].
Titled 'Got Autism', the campaign article is still featured on PETA's website.
The advert has been brought back into the spotlight by British food writer and cook Jack Monroe, who asked the organization to take their recipes down from PETA's website.
The writer asked the animal rights organization to remove the recipes from its website 'with immediate effect coz I wrote them with my autism [sic]'.
Monroe also tweeted: "The thing that makes me maddest about PETA's 'autism' campaign is the frowny face. The deliberate negative stereotyping of autistic folk."
Following the request, the controversial organization removed Monroe's recipes, but still hasn't taken down the 'Got Autism' article.
Outraged Twitter users have written to PETA asking to take the article down.
Alan Smith said: "@peta just seen your dairy-autism meme. I appreciate it's old. Can you take it down from the website and apologise please?[sic]."
User Hanna Friden added: "@peta Why are you writing such unscientific and hateful things about autism? Have autists ever done anything to you? What's the reason?"
Phil Merry said: "Shame on @peta for weaponising autism against parents for their own political ends. It's absolutely disgraceful."
A spokesperson for PETA told The Mighty: "This is an old campaign that is still on our website because we have heard from people who have said it contains helpful information.
"Many families have found that a dairy-free diet can help children with autism, and since the consumption of dairy products has been linked to asthma, constipation, recurrent ear infections, iron deficiency, anemia, and even cancer, dumping dairy is a healthy choice that everyone can make."