Shocking new video has emerged showing Texas cops restraining parents as they tried to rescue their kids on Tuesday after a gunman unleashed terror inside the elementary school, as questions grow over why it took so long to get to the shooter after the first 911 call. Salvador Ramos, 18, arrived at the school in Uvalde at 11.30am, crashing his car into a ditch. A school resource officer was at the scene but he failed to stop him from making his way inside. Two other cops also rushed to the school at that time - Ramos had just shot his...