Suppose I want to fight climate change, and I decide to make a documentary to raise awareness. The logistics of making a documentary is certainly going to result in some amount of additional carbon emissions being produced. I might be called a hypocrite for creating all these CO2 emissions to make a movie that tells people to emit less CO2.

But does that mean it was wrong of me to create this documentary? Not necessarily. If people watch my film and take action to reduce worldwide emissions, it's likely to cancel out the carbon cost of making the film in the first place.