Looking for a specific presentation by Steven Greer

I once watched a presentation where Dr. Steven Greer was talking about Aliens and also about “free energy”. Where he was talking about people who got silenced because they found a way to create a lot of energy out of a small amount.

I’m sure I’ve watched it on YouTube, but i just cant find it anymore. Not even in my Browser History. It’s so weird. I’m sure it wasn’t a dream though :D. I think he made a Powerpoint presentation and there was also a crowd. So, does anyone of you know what Presentation I’m talking about? I really want to watch it again.