https://en.wikipedia.org/wiki/Open_Society_Foundations
The foundation reported granting at least $33 million to civil rights and social justice organizations in the United States.[20] This funding included groups such as the Organization for Black Struggle and Missourians Organizing for Reform and Empowerment that supported protests in the wake of the shooting of Trayvon Martin, the death of Eric Garner, the shooting of Tamir Rice and the shooting of Michael Brown.[21][22][23
linked sources
https://www.washingtontimes.com/news/2015/jan/14/george-soros-funds-ferguson-protests-hopes-to-spur/
https://www.politico.com/magazine/story/2015/03/ferguson-inc-115765#.VYgzbYtFCUk