After Sandy Hook I was moved by Ian Frazier’s piece about anti-gun-violence activists like Shaina Harrison, who are working in the eye of the storm: in the classroom, where gun-violence-prevention skills can be taught, and on the streets, where violence interrupters demonstrate peaceful ways to settle disputes (“Guns Down,” April 5th). I have been a gun-safety activist since my nephew Daniel Barden was killed at Sandy Hook Elementary School, in 2012. The damage done by mass shootings is immense, but the suicides and everyday community violence caused by guns also deserve our attention. Many worthy groups are working to address these issues, from the big names like Brady and Everytown for Gun Safety to myriad smaller ones, like those which Frazier writes about. The N.R.A., rocked by scandal and mismanagement, is not the financial or political powerhouse that it once was. In light of all this, we activists are hopeful that there will be real policy changes, and fewer gun-violence deaths in the United States.