A McDonald's employee posted an unhinged Instagram rant accusing her manager of bullying her a day before she stabbed her to death. Afeni Muhammad, 26, stabbed her manager Jennifer 'Jamma' Harris at least 15 times at the Detroit area McDonald's on Thursday after she was sent home over her performance. Just a day before, Muhammad had taken to social media to express her rage at being sent home early two days in a row. 'I got sent home early yesterday. I got sent home early today by the same person,' Muhammad said in the Instagram reel. 'I'm telling you, she's...