For decades, actress Sheryl Lee Ralph of Broadway's "Dreamgirls" and TV's "Moesha" and "Ray Donovan" has worked tirelessly as an activist for HIV/AIDS research through her nonprofit, Divinely Inspired Victoriously Aware (D.I.V.A.) Foundation. Now, 25 years after the launch of her foundation, Ralph told The Huffington Post that she's felt a renewed sense of purpose in raising awareness for HIV/AIDS thanks, in part, to Charlie Sheen's revelation that he was HIV-positive on the “Today” show. Ralph noted that she hopes Sheen's public admission will help the black community pay better attention to the disease.