“When President Donald Trump pardoned Joe Arpaio last week, it was really an attempt to pardon himself — of his racism and racist political strategy. From Trump opening his political career by promoting the racist, conspiratorial birther movement against the legitimacy of the nation’s first black president, to opening his campaign with an ugly assault on immigrants, to many of his appointments and policies since being elected, Trump’s use of overt racism for his own political gain has been very clear.”