Superintendent Torie Gibson felt she had no choice but to make the unpopular decision. When learning Amador High’s football team had a group chat titled, “Kill the Blacks,” filled with derogatory language and racial slurs, she ended the Northern California school’s varsity season. That meant the 100-year anniversary game between rivals Amador and Argonaut was called off. “We canceled the football season, and we did it for all the right reasons because the behavior is not acceptable,” said Gibson, who oversees the Amador County Unified School District. “However, football is an extracurricular activity. It is not a given. It is...