@luckytran I would argue many people aren't denying anything, but instead are numb to the constant stream of events taking place around us, and choosing inaction over action.
While it takes action to gain control of the world around us, there are also so many things that no individual can change, or even a 100 person group with the same goals. Example: There is virtually nothing I can do to persuade big corporations to make environmentally positive changes. Just vote and hope.