I haven't watched the video myself, but he could be referencing Nick Hanauer, a venture capitalist from Seattle, whose speech at the TED University conference titled "Rich people don't create jobs" was deemed "too politically controversial" to post on their web site.

I clicked your link. Even though there is an article at the bottom with "inequality" in the title, I tried doing a search but couldn't find a single talk with "inequality" in the title. It is a possible tag, but cannot be found in the title.

Edit: Snopes says the story of "censorship" was disseminated by Nick Hanauer's PR team after TED decided not to promote the story: https://www.snopes.com/fact-check/banned-ted-talk-nick-hanau...