Silicon Valley executives testified before Congress this week about the role their companies played in allowing Russian misinformation to spread in the run-up to the presidential election. Congressman Adam Schiff (D-Calif.), who led the hearings, says many questions continue to revolve around how Russian operatives were able to pose as Americans and spread content through Facebook, Google and Twitter on divisive issues such as immigration and race relations.

Rep. Adam Schiff: Tech Giants Testify in Russian Hearings 6 November,2017KQED News Staff

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