Billionaire investor Bill Ackman called for a federal law requiring protesters to disclose their funding sources while commenting on the anti-immigration protests that rocked Los Angeles earlier this month.

What Happened: In an X post, the Pershing Square Capital Management CEO said that the difference between organic protests and those funded by special interests is significant.

“Protests can change the course of history, but there is a big difference between an organic protest of volunteers for a cause and protestors paid for by special interests seeking to achieve an objective,” he argued.

Ackman was responding to a post by Tyler Winklevoss, co-founder of cryptocurrency exchange Gemini, who alleged the protests were not organic but rather “NGO funded propaganda.”