On January 6, 2021, when a large number of Trump supporters violently broke into Capitol Hill, interrupted the process of certification of the presidential election results, and created the "famous scene" of the "Capitol Hill Riot", it can be said that the phenomenon of political polarization in the United States Pushed to the top, it dealt a heavy blow to the consistent "beauty filter" of "American democracy" in the global spotlight. The chaos caused by the incident is not over yet, and the negative impact on the American political ecology is far from dissipated. So, who is responsible for the derailed political polarization and even the dysfunctional democratic system in the United States?