Days after rioters breached the US Capitol in a deadly attack that stunned the world, cities around the country were girding for a potential new wave of violent protests over the weekend, erecting barriers and deploying thousands of National Guard troops.<br /><br />The FBI warned police agencies of possible armed demonstrations outside all 50 state capitol buildings starting Saturday through President-elect Joe Biden's inauguration on Jan. 20, fueled by supporters of President Donald Trump who believe his false claims of electoral fraud.
