In this new video (YouTube link), Kony 2012 mastermind Jason Russell can be heard ranting to himself, dropping F-bombs, clapping to no one in particular, and shouting about the devil. 

TMZ has footage of “Kony 2012” honcho Jason Russell in the midst of his naked meltdown in San Diego (YouTube video) … pounding his fists in anger and screaming maniacally. 

As we previously reported, Russell was detained by police yesterday … after witnesses say he was running around naked and making sexual gestures.