Over the past couple of days the subject of athlete activism, always present to some degree in American sports, but recently revived by Colin Kaepernick and a few other football players in the form of silent protests during the National Anthem, exploded into a headline dominating news story. Lighting the fuse: President Trump directly inserting himself into the controversy. He did so during a speech on Friday night and during a series of tweets Saturday and continuing into this morning in which he urged NFL owners to “fire” or suspend players who do not stand for the national anthem. He...