Three-time Golden Globe nominee Mark Ruffalo sits down with HFPA journalist Sam Asi to talk about how his interests as a humanitarian, environmentalist and activist all helped shape his latest film Dark Waters. They also discuss marching after the 2017 events in Charlottesville, what inspires his activism, the dark places of dealing with a brain tumor, face paralyzation, the death of his brother, and starring in films like The Kids are Alright, The Avengers, and more.