Trump has repeatedly amplified QAnon Twitter accounts. The FBI has linked the conspiracy theory to domestic terror
As of July 7, 2020, President Donald Trump has amplified tweets from accounts promoting the QAnon conspiracy theory at least 185 times via at least 114 individual accounts, some of them more than once. (Since the novel coronavirus pandemic began in the United States, he has amplified QAnon Twitter accounts at least 90 times via 49 individual accounts.) Additionally, members of Trump's family, his personal attorney, current and former campaign staffers, and even some current and former Trump administration officials have also repeatedly amplified QAnon supporters and their content.
The QAnon conspiracy theory has been tied to acts of violence, used by anti-government groups, and was flagged as a potential domestic terror threat by the FBI.
https://www.mediamatters.org/twitter/fbi-calls-qanon-domestic-terror-threat-trump-has-amplified-qanon-supporters-twitter-more-20