Comment from YouTube viewer:
Deniers that human activity is causing climate change are like the Black Knight in Monty Python and the Holy Grail. It makes no difference how much evidence is presented they will still deny the reality of the situation.
King Arthur: “Look, you stupid Bastard. You’ve got no arms left.”
Black Knight: “Yes I have.”
King Arthur: “Look!”
Black Knight: “It’s just a flesh wound.”