A’s outfielder Mark Canha grew up in San Jose and attended Bellarmine High School and Cal. Saturday night, he put his left hand on the right shoulder of teammate Bruce Maxwell, who was the first big-league baseball player to take a knee during the national anthem. Maxwell, who grew up in a military family, cited his experiences with racism in Huntsville, Ala., where President Trump said this week NFL players should be fired for kneeling during the anthem. The A’s catcher took a knee again before Sunday’s game, again with his hand on his heart, again with Canha at his...