After several thousand supporters of President Donald Trump protested the election results and marched to the Supreme Court, nighttime clashes with counterdemonstrators led to fistfights, at least one stabbing and more than 20 arrests. Several other cities on Saturday also saw gatherings of Trump supporters unwilling to accept Democrat Joe Biden’s Electoral College and popular vote victory as legitimate. The demonstrations in the nation’s capital went from tense to violent during the night and early Sunday.