One campaigner said the fast food giant 'puts chickens through hell' - and said it 'wields enormous power to transform animal welfare standards for millions of livestock'
The actor brought her son to the event, organized by animal advocacy organizations
They want to reduce suffering for animals in the industrial food complex
The company has also been the target of a campaign by The Humane League UK
His followers are calling on other celebrities to follow suit
Animal rights activists in chicken masks cage themselves in supermarket trolleys
Vegans looking to get involved in campaigning will find plenty of volunteer opportunities here