New York magazine’s veteran art critic Jerry Saltz advised his social media followers to “shun” anybody who has voted for Republican political candidates — even if they are “friends and family.” “If you know anyone who voted Republican — including friends and family — you should shun them,” Saltz wrote on his Instagram page on Sunday. “No need to even tell them that you are no longer communicating with them or why,” Saltz wrote. “You own it [sic] yourself, to them, your country, and any idea of moral damage.” Saltz — who was responding to a post of an old...