Prosecutors say Nikolas Cruz's Nazi symbols, racist posts, cruelty to animals show he's not mentally ill, was not impaired when he killed 17 people in Florida in 2018

Survivors and parents of victims from shootings in Buffalo and Texas recount harrowing shootings, urging lawmakers to take action on guns

Among the injured are several fourth-grade students whose classmates and teachers were shot dead; 8-year-old Jeremiah Lennon feared he would be killed if he went back to school

Some locals thank president for visiting, while others urge him to 'do something,' as the city mourns 19 of its children and two teachers shot dead last week

Children frantically called 911 from dead teacher's phone while nearly 20 officers stood outside the classroom for 45 minutes waiting for someone to unlock the door

Joe Garcia passes away 'due to grief' just two days after his wife Irma Garcia was murdered while trying to protect her students

Anger and questions mount over slow police response and inaction as they waited outside while the gunman killed children, even preventing parents from trying to get in

Parent whose daughter was killed says he wanted to run into elementary himself while police stood outside, amid questions over 40 minutes it took to enter classroom, shoot killer

'He kept to himself; he didn't have many friends,' Adriana Reyes says of her son, rejecting reports of a violent history; Biden urges new limitations on guns

18-year-old Salvador Ramos, who killed 21 people in the deadliest US school shooting since 2012, also posted pictures of his rifles on Instagram that he bought after his birthday