A majority white Mississippi school faces heat after a teacher handed out a "slave letter writing" assignment asking students to imagine what their family life would entail if they were slaves. https://twitter.com/BLivesMatterMS/status/1367183352122474504?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1367183352122474504%7Ctwgr%5E%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fwww.thedailybeast.com%2Fpurvis-middle-school-and-mississippi-erupt-over-schools-slave-letter-writing-activity According to The Daily Beast, eighth-graders at Purvis Middle School were asked to "pretend like you are a salve working on a Mississippi…