Our two part series on billionaires and public education continues. Today, we’re zooming in on the rise of new, well-funded activist groups targeting school boards, banning books, and attacking everything from diversity initiatives to trans student rights.

Who’s behind groups like Moms for Liberty and Parents Defending Education? What is “dark money,” and how does it quietly reshape local and national education policy? And who is Leonard Leo, and why is he so influential in this fight? Alyssa Bowen, deputy executive director of True North Research and the director of True North’s Equality Project, explains.