The National Portrait Gallery on Monday unveiled portraits of former President Barack Obama and first lady Michelle Obama — to a very mixed reception. Even though Barack Obama praised Baltimore-based artist Amy Sherald “for so spectacularly capturing the grace and beauty and intelligence and charm and hotness of the woman I love,” many critics on social media slammed the rendition of the former first lady. Their main question: Is that really her? […] For the portrait, the former first lady was painted in “grayscale” — a charcoal color with taupe undertones. She’s seated, with her hair falling around her shoulders,...