LOS ANGELES (Reuters) – A sobbing Rihanna has told Oprah Winfrey she felt protective of boyfriend Chris Brown after he beat her up more than three years ago and was concerned that everyone would think of him as a monster. The "Umbrella" singer, in a rare emotional TV interview set to air on Sunday detailing her thoughts about the highly publicized 2009 assault, told Winfrey that the days and weeks after incident left her confused and ashamed. "It was embarrassing, it was humiliating," Rihanna told Winfrey in the interview, excerpts of which were released on Thursday. "I lost my best friend. …
