School violence

A school bus evacuates students from Sue V. Cleveland High School in Rio Rancho, New Mexico, on Thursday, Feb. 14, 2019, after a shot was fired on the campus. Police and school officials said no one was injured and a suspect was taken into custody. (AP/Russell Contreras)

Students at Seminole Middle School in Plantation, Fla., participate in a moment of silence Thursday, Feb. 14, 2019, for the 14 students and three staff members killed one year ago at nearby Marjory Stoneman Douglas High School. They are sitting in front of a new mural depicting musicians from throughout the world that was dedicated to the shooting victims. (AP Photo/Terry Spencer)

Emma Rothenberg, from left to right, with her mother Cheryl Rothenberg and sister, Marjory Stoneman Douglas High School student Sophia Rothenberg, embrace at a memorial marking the one-year anniversary of a mass shooting at the school in Parkland, Fla., on Thursday, Feb. 14, 2019. (Al Diaz/Miami Herald via AP)

Suzanne Devine Clark, an art teacher at Deerfield Beach Elementary School, places painted stones at a memorial outside Marjory Stoneman Douglas High School during the one-year anniversary of the school shooting, Thursday, Feb. 14, 2019, in Parkland, Fla. A year ago on Thursday, 14 students and three staff members were killed when a gunman opened fire at the high school. (AP Photo/Wilfredo Lee)

California artist David Best, and a team of volunteers build a non-denominational, temporary temple for the anniversary of the Marjory Stoneman Douglas High School shooting massacre, on Tuesday, Feb. 5, 2019 in Coral Springs, Fla. Visitors will be allowed to mourn, remember, contemplate, leave mementos and write message on its walls. (AP Photo/Brynn Anderson)

In this, Thursday, Feb. 7, 2019 photo, Matt Deitsch, center, hugs his sister Sam, left, and mother Elizabeth, as Elizabeth prepares to take Sam to the airport on for a speaking engagement in Washington, from their home in Parkland, Fla. Matt, Sam and their brother Ryan have crisscrossed the country helping to register young voters and advocate for stricter gun laws. (AP Photo/Wilfredo Lee)

Sen. Bob Menendez, D-N.J., right, accompanied by Sen. Richard Blumenthal, D-Conn., left, speaks at a news conference on an proposed amendment to ban high capacity magazines in guns, on Capitol Hill, Tuesday, Feb. 12, 2019, in Washington. (AP Photo/Andrew Harnik)

FILE - In this Jan. 28, 2013, file photo, members of the Washington County Sheriff's Office and the Hudson Falls Police Department use unloaded guns to take part in an emergency drill as they walk through a corridor inside the Hudson Falls Primary School in Hudson Falls, N.Y. With each subsequent shooting forcing schools to review their readiness, parents are increasingly questioning elements of the ever-evolving drills that are now part of most emergency plans, including the use of simulated gunfire and blood, when to reveal it’s just practice, and whether drills unduly traumatize kids. (Omar Ricardo Aquije/The Post-Star via AP, File)

FILE - In this Aug. 23, 2018, file photo, David Hogg, 18, center right, a survivor of the school shooting at Marjory Stoneman Douglas High School, in Parkland, Fla., walks in a planned 50-mile march in Worcester, Mass. Hogg, became the most prominent spokesman for March for Our Lives, a group he and other Stoneman Douglas students founded that is pushing for stronger gun laws. (AP Photo/Steven Senne, File)

FILE - In this Tuesday, Jan. 29, 2019, file photo, Linda Beigel Schulman, left, holds a photograph of her son Scott Beigel, who was killed during the Valentine’s Day massacre at Marjory Stoneman Douglas High School, while speaking with New York Gov. Andrew Cuomo and gun safety advocates during a news conference at the state Capitol in Albany, N.Y. Since the shooting, states have seen a surge of interest in laws intended to make it easier to disarm people who show signs of being violent or suicidal. (AP Photo/Hans Pennink, File)