Disney-Marvel's "Black Panther" dominated social media buzz last week in the wake of its first trailer with 466,000 new conversations, according to media-measurement firm comScore and its PreAct service. The trailer for the film debuted during Game 4 of the NBA Finals on June 9, as the Golden State Warriors and Cleveland Cavaliers faced off. The footage offered the first look at such big stars as Lupita Nyong'o and Michael B. Jordan, as well as Chadwick Boseman, who plays the titular Black Panther.