Host of eponymous “Melissa Harris-Perry Show” is under fire for making the race of Romney’s adopted grandson a punchline. MSNBC host Melissa Harris-Perry concluded the “What’s So Funny About 2013?” segment of her Sunday show with a chorus of laughter at the black grandson pictured in former Massachusetts Gov. Mitt Romney’s family Christmas photo. The chuckles were directed at baby Kieran – who was adopted by Romney’s son Ben and his wife Andelynne in September. Also read: The Year in Cable News: Bashir, Baldwin Exits Cap Year of Turmoil for MSNBC “One of these things is not like the others,...