Author Larry Kramer died on Wednesday at the age of 84. Kramer’s early advocacy for a national response to AIDS in the 1980s helped raise awareness of the disease. According to CNN, the LGBTQ health pioneer also shaped healthcare policy into the 1990s. Kramer co-founded the ACT UP movement that made AIDS a national issue. He died of pneumonia after enduring illness for much of his life, including his own battle with AIDS.