Confronted with an onslaught of social media posts filled with misinformation and harmful content, Facebook said Tuesday it has begun to rely on artificial intelligence to boost its efforts to evaluate whether posts violate its policies and should be labeled or removed. AI is being used to rank content on its platforms involving self-harm, sexual exploitation, and hate speech. However, content will still be evaluated by human moderators, regardless of whether the offending posts are reported by users or detected by the company’s proactive systems. Guy Rosen, Facebook’s vice president of integrity, told reporters on a call Tuesday that the...