A year ago, on 6 January 2021, an angry mob stormed the US Capitol building.
Their motivation was that they didn’t believe Joe Biden had won the 2020 presidential election — or they didn’t want to believe it — so the crowd forcibly entered the Capitol building to try and stop the certification of the election by Congress. They’d been drawn to Washington, DC by the former president Donald Trump, and at least some of the pack had attended a rally in support of Trump before storming the building.