The gunman who massacred 19 children and two teachers at an elementary school in Texas had posted a warning on Facebook of what he was about to do, according to Texas Governor Gregg Abbott. He said Salvador Ramos said on Facebook that he shot his grandmother and then was going to shoot up a school. Abbott says Ramos did then go to Robb Elementary School in Uvalde where he got inside and opened fire. Responding authorities killed Ramos.