Andre Perry, a New Orleans education consultant, said he was shocked on Sunday (Jan. 31) afternoon when he noticed that his 5-year-old son had caught a necklace of Mardi Gras beads studded with plastic Confederate flags, thrown from a float in the Krewe of Carrollton parade. "When I noticed what he caught," Perry wrote in a text message, "I took them away from him." Perry, who is African-American, said that he later did his best to help his son understand the implications of the symbol. He also posted a photo of the beads on his social media account, which attracted...