America has had a large number of shootings over the past decades. Whenever there is a massacre of students, the public gets angry and mourns the horrific event. Politicians react along partisan lines. Democrats call for gun control; Republicans want to arm teachers and school staff.

Since the Supreme Court has decisively ruled against most gun restrictions, the Republicans have had the upper hand.

In Tennessee, the Republican-dominated legislature passed a bill yesterday to arm teachers and other school staff. This was a response to a deadly shooting at a private Christian school. Parents at that school gathered signatures against the bill, but the legislators didn’t listen.

The New York Times reported:

Tennessee lawmakers passed a bill on Tuesday to allow teachers and other school staff members to carry concealed handguns on school campuses. The measure, if it becomes law, would require those carrying guns to go through training and to have the approval of school officials, but parents and most other school employees would not be notified.

The bill is one of the most significant pieces of public safety legislation to advance in Tennessee after a shooting just over a year ago at a private Christian school in Nashville left three students and three staff members dead. The attack galvanized parents at the school and many others in Tennessee — including the state’s Republican governor — to demand action that could prevent similar violence.

But many of them believed that restricting access to guns was the solution, and critics of the legislation have argued that bringing more weapons onto school campuses would not improve safety and could even amplify the danger facing students.

Protesters opposed to the bill packed the House chamber and the corridors of the Capitol on Tuesday, carrying signs that said, “Kids Deserve More!” and “Have You Lost Your Ever-Loving Minds?”

The demonstrators echoed fears that have been raised since the legislation was proposed.

“I ask that you don’t put our children’s lives at risk by putting more and more guns in schools,” State Senator London Lamar, a Democrat from Memphis, said during a debate this month as she cradled her infant son. “It is really hard,” she added, “even as a new mom, to stand here and have to be composed on a piece of legislation that I know puts my son’s life at risk…”

The bill significantly expands the current law, which mostly limits the carrying of firearms to law enforcement officers employed at a public school or to school resource officers.

The new legislation would broaden that permission to school staff members who have an enhanced handgun carry permit and who have the approval of their principal, district director and leaders of relevant local law enforcement agencies. The measure also imposes confidentiality rules around the disclosure of who is carrying a concealed handgun.

The staff member must also complete 40 hours of school policing training, undergo a background check, submit fingerprints to state and federal authorities, and submit a psychological certification from a licensed health provider. The handgun cannot be carried in auditoriums or stadiums during school events; during disciplinary or tenure meetings; or in a clinic.

Roughly half of U.S. states allow teachers or other school employees with concealed carry permits to have firearms on campus, according to Giffords, the research group led by the former congresswoman Gabrielle Giffords, who was herself among 19 people shot during a meeting she was having with constituents in 2011. (Six people were killed.)