Hopefully it includes the recent history of the Jan. 6th. coup attempt. That being unusual to recorded history as the political right joined with the traditional leftists' attempts to bring about change for the working people.
The instances of the workers of both sides uniting has led to fascism in two cases we're all aware of.
America's working class issues were failed to be addressed and changed for the better by Trump. The situation won't relax until the huge levels of inequality are addressed and corrected. Gun related violence will escalate to a level at which something must change to lower the heat of the anger!