Extremists in Capitol Riot Had Histories of Violent Rhetoric and Threats

Shortly after the November election, agents with the Georgia Bureau of Investigation received a tip that a man planned to bring guns to a rally for President Trump at the state Capitol and was possibly psychologically unstable. Agents didn’t find evidence of criminal activity, a spokeswoman said, but they alerted the Federal Bureau of Investigation about the man, Cleveland Meredith Jr. It was the second time in less than a year the GBI passed concerns about Mr. Meredith to the FBI, according to the spokeswoman.

Last week, hours after a...