Mark Ruffalo on The Kids Are All Right: 'America is struggling with some antiquated ideas'

Mark Ruffalo on The Kids Are All Right: 'America is struggling with some antiquated ideas'. Julianne Moore, Mark Ruffalo and director Lisa Cholodenko discuss the relationships, politics and humour of their new film, The Kids Are All Right, in which the children of a lesbian couple seek out their sperm donor father