Fired MSNBC host Joy Reid played Grinch on social media this week, sharing a video claiming beloved Christmas anthem “Jingle Bells” was written “to make fun of black people.” In the video she shared to her 1.3 million Instagram followers, a man in a Christmas sweater and Santa hat stands on the streets of Medford, Massachusetts near a plaque marks the site where James Lord Pierpont is believed to have penned the song in 1850. He takes off his hat disapprovingly and scowls at the plaque, the video caption reading “this is where a racist Confederate soldier wrote ‘Jingle Bells’...