Former U.S. Rep. Barbara Comstock will join U.S. Sen. Mark Warner, UVA law professor Danielle Citron and media studies professor Siva Vaidhyanathan for “Social Media vs. Democracy,” a Democracy Dialogues series event produced by UVA’s Karsh Institute of Democracy and co-sponsored by UVA’s Miller Center of Public Affairs. The hourlong session is set to explore the evolving impact of social media on politics and in other areas of life.