Social media promotes violent right-wing extremism in the U.S.
An editorial in the New York Times says: Social media has played a key role in the recent rise of violent right-wing extremism in the United States, including three recent incidents — one in which a man was accused of sending mail bombs to critics of the president, another in which a man shot dead two African-Americans in a Kroger’s grocery store in Kentucky, and a third in which a man is accused of conducting a murderous rampage at a…