A teenage girl was killed when a “trespasser” stabbed her at a high school in California this week, according to reports. The horrifying attack unfolded just after 11 a.m. on Monday morning in Stockton, a city in the Central Valley of the Golden State. A male suspect carrying a knife managed to enter Stagg High School and fatally stab 15-year-old Alicia Reynaga in a “random act,” authorities...