SAO PAULO (AP) — When dancer Camila Prins entered Sao Paulo’s Carnival parade grounds, a costume of feathers clinging to her sinuous body, she fulfilled a dream of feminine beauty nearly three decades old. Prins says she first realized she wanted to be a woman at a Carnival party at age 11, when, like the other boys, she was allowed to dress like a girl as part of the burlesque festivities. Now, in the final minutes of Saturday, she became the first transgender woman to lead the drum section of a top samba school in either of the renowned Carnival...