Texas school massacre: 18 children, 3 adults shot dead, several critical

Uvalde, Texas, May 25 (AP) : In one of the worst school shootings in American history, an 18-year-old gunman has killed 21 people, including 18 children, and rendered several other grievously injured at an elementary school in Texas state, before the assailant was eliminated in police firing. Gunshots rang out of Robb Elementary School in…