Why Mark Zuckerberg and the Tech Bros Are So Obsessed with Mixed Martial Arts

We found the guy who kicked Mark Zuckerberg’s a$$ on viral video — and the trainers who might've tried to overturn the ref's decision. But did the most powerful unelected man in America really get choked unconscious? And how did Silicon Valley fall in love with Brazilian jiu-jitsu? PTFO correspondent Jay Caspian Kang reports.

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