Yes, George Soros’ Open Society Foundations fund a nonprofit organization that finances pro-Palestine protests. The organization is called the US Campaign for Palestinian Rights. According to a watchdog group that monitors philanthropy, the organization received a total of $200,000 between 2008 and 2013 from Soros’ foundation.
The organization is known to provide funding and support to a wide range of pro-Palestine actions and events, including “protests, lobbying, and other forms of civil disobedience.” The Open Society Foundation has come under scrutiny from critics for supporting such activities, which some deem controversial.