Not modern. Greenpeace was founded 50 years ago with an anti-nuclear agenda. They call themselves "green" because a wolf wouldn't dress up as a wolf, but rather a sheep.
Pretty sure they started out being opposed to live nuclear weapons testing. Not sure what there exact position is currently, but calling them wolves seems unfair.
I disagree. Their influence on policy has directly benefitted the fossil fuel industry and worsened the climate crisis. History will remember them for what they are.