School violence

FILE- In this Feb. 15, 2018, file photo, law enforcement officers block off the entrance to Marjory Stoneman Douglas High School in Parkland, Fla., following a deadly shooting at the school. A California man who is on the autism spectrum was sentenced Monday, March 2, 2020, to more than five years in prison for cyberstalking families of Parkland, Florida, school shooting victims. (AP Photo/Wilfredo Lee, File)

FILE - In this Wednesday, Nov. 20, 2019, file photo, Recording Academy President/CEO Deborah Dugan participates in the 62nd Grammy Awards nominations news conference at Studio 43 at CBS Broadcast Center in New York. The Recording Academy says it has fired Deborah Dugan, its former president who called into question the integrity of the Grammy Awards nominations process. The academy said Monday the decision was reached after “two exhaustive, costly independent investigations” about Dugan and her allegations. It said the reviews found “consistent management deficiencies and failures,” though no specifics were offered. (Photo by Charles Sykes/Invision/AP, File)

FILE - In this Wednesday, Feb. 14, 2018, file photo, students hold their hands in the air as they are evacuated by police from Marjory Stoneman Douglas High School in Parkland, Fla., after a shooter opened fire on the campus. A Florida law that allows judges to bar anyone deemed dangerous from possessing firearms has been used 3,500 times since its enactment after the 2018 high school massacre. An Associated Press analysis shows the law is being used unevenly around the state. (Mike Stocker/South Florida Sun-Sentinel via AP, File)

Steven Jones was sentenced to a six year prison term Tuesday, Feb. 11, 2020, in Flagstaff, Ariz., after taking a plea deal on one count of manslaughter and three counts of aggravated assault stemming from an October 2015 shooting on the Northern Arizona University campus which left one student dead and three others wounded. (Jake Bacon/Arizona Daily Sun via AP)

President Donald Trump speaks during a campaign rally Monday, Feb. 10, 2020, in Manchester, N.H. (AP Photo/Evan Vucci)

President Donald Trump walks on the South Lawn as he leaves the White House, Monday, Feb. 10, 2020, in Washington for a trip to Manchester, N.H., for a campaign rally. (AP Photo/Manuel Balce Ceneta)

FILE - In this May 8, 2019 file photo, a Douglas County, Colo., Sheriff's deputy walks past the doors of the STEM Highlands Ranch school in Highlands Ranch, Colo. The younger of two students charged in a school shooting in suburban Denver that killed a classmate has pleaded guilty. Prosecutors say 16-year-old Alec McKinney pleaded guilty on Friday, Feb. 7, 2020 to 17 felonies, including a first-degree murder charge. In December, a judge ruled that McKinney would be prosecuted as an adult in the May 7 shooting at STEM School Highlands Ranch that killed 18-year-old Kendrick Castillo. Devon Erickson has pleaded not guilty to the same charges McKinney faced in the shooting.(AP Photo/David Zalubowski, File)

A sign outside of Pride Rock residence hall warns students following a shooting, Monday, Feb. 3, 2020, at Texas A&M University-Commerce in Commerce, Texas. (Juan Figueroa/The Dallas Morning News via AP)