Its Black History Month and Amazon's Alexa will now dole out factoids about some of the most prominent black men and women in America. All one has to do is to ask Alexa, "Alexa, tell black history facts," or "Alexa, tell black history facts from the 21st century." The facts are narrated by Amazon employees, as well as a few notable voices, like Clayton Petrie, one of the first African American Marines to fight in World War II. Ex-49ers running back Roger Craig