Chief Justice John Roberts is warning that elected officials’ heated words about judges can lead to threats or acts of violence by others. Roberts' comments Saturday at a judicial conference come at a time when threats against judges are on the rise. Roberts didn't identify anyone by name. But he was clearly referring to Republican President Donald Trump and Senate Democratic leader Chuck Schumer when he said he's felt compelled to issue public rebukes of figures in both parties in recent years. Roberts said the danger is that people might pick up on such criticism. He cited “serious threats of violence and murder of judges just simply for doing their work.”