Facebook is undertaking a campaign to combat fake news. It is a belated recognition that false stories on its web site were influencing people in negative ways. Some commentators accused Facebook of throwing the election to Donald Trump because it had not policed fake news to that point. Facebook understandably rejected that claim but it accepted that phony stories are a public relations issue for the company. So, it has put in place machinery and human judgement to root out the trash and keep bonafide stories. Is it perfect? No. Nothing can catch fake news 100 percent of the time. But, if Facebook can reduce false stories by a high percentage, it will make a stride toward protecting its users. That in itself would be good PR.