奥巴马总统就路易斯安那州巴吞鲁日枪击案发表的讲话
Good afternoon, everybody. As all of you know now, this morning, three law enforcement officers in Baton Rouge were killed in the line of duty. Three others were wounded. One is still in critical condition. As of right now, we don't know the motive of the killer. We don't know whether the killer set out to target police officers, or whether he gunned them down as the...