The first scenario, filmed in a London park, involves a male actor attacking his ‘girlfriend’ in front of shocked members of the public.

They are quick to intervene, with one threatening to call the police and another telling the woman: “You don’t have to put up with that honey, he’s not worth it.”

When the roles are switched and the female actor attacks the man, the crowd’s reaction couldn’t be more different.

Instead of stepping in to help the man, people stare and many even laugh.

Not one person steps in to help as the man is violently forced against the park’s raillings.