Yes, what you're seeing its real. They damaged an UNESCO relic just for an "enviroment message"
Commonly, I have respect for Greenpeace. Unlike PETA , they do ahve done some serius work agaisn't really dangerous companies and safed many in danger animals.
But whoever was in charge of this stunt really fucked it up. Looks like main Greepeace leaders are trying to apologize but the damage is done. This is really fucking sad