Recent racially tinged incidents on college campuses:
—Duke University officials say a student hung a noose in the Bryan Center plaza, but they refuse to release the person's name or race.
—Three students at Bucknell University in Pennsylvania are expelled over a campus radio broadcast in which they make racist comments and use a slur.
—Fraternity members at the University of Oklahoma are caught on videotape taking part in a chant that includes references to lynching and uses a racial slur to describe how the Sigma Alpha Epsilon fraternity will never accept black members.
—At the State University of New York's Purchase campus, someone spray-paints swastikas and nooses on the walls of three freshman dormitories. Police arrest 18-year-old Raymond Turchioe, 18, of Manhattan, and charge him with aggravated harassment.
—Former University of Mississippi student Graeme Phillip Harris is indicted on federal civil rights charges. He is accused of tying a noose and draping an old Georgia state flag that includes a Confederate banner around a statue of the university's first African-American student last year.
—University of Virginia student Martese Johnson calls police racist after a violent arrest by state Alcoholic Beverage Control police. Video of his blood-soaked face appears on social media. He plans to plead not guilty to public intoxication or swearing and obstruction of justice.
—An Arizona State University police officer resigns after being caught on video slamming a black female professor to the ground during an arrest for walking in the middle of a street near campus. English professor Ersula Ore pleads guilty to a misdemeanor count of resisting arrest, saying she was walking in the street on May 20 because construction work obstructed the sidewalk.