Bickert said Facebook removed posts from several militant groups in the lead-up to the violent event and continued to remove content celebrating the riots and planning future violence after Jan. 6. The company said it didn’t use its facial recognition software to help the government identify people, but passed along data in response to requests.

In the days following the attack, Chief Operating Officer Sheryl Sandberg said the riots were planned mostly on other social media platforms. But reporters quickly found evidence that Facebook and Instagram, which the company also owns, were mainstream tools for coordinating and spreading the word about the events.