I don't think the OTFs "Information Controls Fellowship" https://www.opentech.fund/funds/icfp/ or "Rapid Response Fund" https://www.opentech.fund/funds/rapid-response-fund/ with their focus on technology and the internet are what people usually think of when they talk about "riots funded by the US".

Did you even read the article? It's about Trump defunding OTF, which funds Signal.