The threat of extremist groups descending on state capitals in a series of demonstrations Sunday prompted governors to roll out a massive show of force and implement tight security measures at statehouses across the country. Fencing, boarded-up windows and lines of police and National Guard troops have transformed statehouse grounds ahead of expected demonstrations leading up to President-elect Joe Biden’s inauguration on Wednesday. The stepped-up security measures were intended to safeguard seats of government from the type of violence that occurred at the U.S.