It's been more than a decade since the appalling death of Matthew Shepard, a gay college student who was tortured and then murdered. Since that time, Matthew's mother, JUDY SHEPARD, has become an outspoken activist for gay rights and hate-crime prosecution. As the founder of the Matthew Shepard Foundation, she's internationally recognized for her work in gaining social justice for gays, lesbians, bisexuals and transgender individuals. Shepard shares personal thoughts and reads from her new book, The Meaning of Matthew: My Son's Murder in Laramie and a World Transformed. Free. 7:30 p.m. Presser Hall, Agnes Scott College, 141 E. College Ave., Decatur. 404-471-6430. www.georgiacenterforthebook.org.