Sowing Discord (IMAGE) University of Colorado at Boulder Caption This fake ad, developed and paid for by the Russian troll farm, the Internet Research Agency, was targeted toward Facebook users who had expressed interest in gun rights group. Credit Courtesy Chris Vargo/CU Boulder Usage Restrictions Must credit CU Boulder License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.