A Texas man who carried out the mass shooting at the Cielo Vista Walmart in El Paso, Texas, on Aug. 3, 2019, killing 23 people and injuring 22 more, pleaded guilty today in U.S. District Court to a 90-count indictment, including 45 counts of violating the Matthew Shepard and James Byrd Jr. Hate Crimes Prevention Act and 45 counts of using a firearm during and in relation to crimes of violence.