The Hulk takes a swipe at Sinn Féin over fracking stance 

Mark Ruffalo has taken a swipe at Sinn Féin over the party's stance on fracking. Picture:  Jordan Strauss/Invision/AP

Star of The Avengers movies Mark Ruffalo has taken a swipe at Sinn Féin over the party's stance on fracking.

The American actor, who plays The Hulk in the superhero films, took part in an online seminar last night, calling for the party to fight a DUP petroleum licensing policy that campaigners say would lead to fracking in the North.