* Every year in America, 500 children and teenagers die, and an estimated 7,500 kids are hospitalized, from gun violence, according to findings presented at an American Academy of Pediatrics conference held in Orlando, Fla., last weekend. The study found that handguns account for the majority of childhood gunshot wounds, and states with higher percentages of household firearm ownership have higher proportions of firearm injuries among children.

* Some American cities have more gun murders per capita than entire nations, according to this map created by the Martin Prosperity Institute using C.D.C. statistics. Some standouts: The gun murder rate in New Orleans is nearly on a par with that of Honduras, Phoenix’s surpasses Mexico’s, and Detroit’s is rapidly approaching El Salvador’s.

* The N.R.A. is urging its members to band together in opposition to Measure C, a common-sense proposal that would require gun owners in Sunnyvale, Calif., to report firearm theft to the police within 48 hours, lock up their guns at home and get rid of magazines that hold more than 10 rounds. Gun dealers would also have to keep logs of ammunition sales, and ammunition purchases would be registered using a thumbprint.

And in honor of Lou Reed, who died on Sunday, today’s report is led by “The Gun,” from his 1982 album, The Blue Mask.

—Jennifer Mascia

A 4-year-old girl was shot and killed by someone target shooting at his home south of Rogersville, Mo., Monday afternoon. A 24-year-old man was firing a .22-caliber rifle when the child, who was visiting, walked into his path of fire. She was struck in the head. The gunman was arrested on an outstanding warrant.

—The Kansas City Star

An attempted murder-suicide in Waikiki, Hawaii, left a 33-year-old woman dead and a 40-year-old man hospitalized with serious injuries early Monday. Two Army Criminal Investigation Command investigators were called to the scene because the man was believed to be a soldier.

—Honolulu Star Advertiser

Melissa Griffin, 43, and Michael Griffin, 49, were found shot to death in their home in Elizabethton, Tenn., early Sunday. A family friend who stopped by discovered the bodies. Police believe it was a murder-suicide.

—Johnson City Press

A 50-year-old man was killed and two men, 33 and 35, were injured in Stockton, Calif., Sunday night. Police are soliciting tips from the public.

—News10Net.com

Barry Briemon, Jr., 48, was shot in the hip and wounded in La Center, Wash., Sunday night, and his father, 65-year-old Barry Briemon, Sr., was arrested. The gunman had called 911 before the shooting and said he was going to kill his sons and himself.

—KATU.com

A 79-year-old woman was shot in the Melrose section of the Bronx, N.Y., Monday afternoon. Police are investigating.

—ABC 7

Ebone Driskell, 32, was killed during an armed robbery at Doc’s Food & Spirits in Smyrna, Ga., early Monday. Anyone with information is advised to call the Smyrna Police Department.

—AJC.com

A woman was shot with her own gun during a home invasion in Hillview, Ky., early Monday. The victim told police she found an intruder at her back door at about 4 a.m. When she grabbed her 9mm pistol, the suspect turned the barrel around, aiming it at her. Two burglaries had previously been reported at that address.

—WDRB.com

Jonathon Hill, 35, and Timber Taylor, 19, were found shot to death on the grounds of the Prissy Chrissy Ranch, a wedding reception venue outside Texarkana, Tex., early Monday. The son of the ranch owner said the two victims were trying to break in. No charges have been filed.

—KTBS.com

A 17-year-old boy was shot and wounded in the Gilpin Court public-housing project in Richmond, Va., Sunday afternoon. Detectives are investigating.

—Richmond Times-Dispatch

A woman in her early 20s shot and killed herself at her home on the north side of San Antonio, Tex., Monday morning. An officer was seen cradling a toddler outside the home.

—MySA.com

Dexter Brown, 31, was shot in the leg during an attempted robbery in Palatka, Fla., Sunday morning, and while fighting for control of the weapon, the suspect, 23-year-old Frasheeda Hagans, shot herself in the leg. The case is being investigated and charges are pending.

—Jacksonville.com

A 21-year-old man was shot and killed in a grocery store in Philadelphia, Pa., Monday afternoon. Police said the gunman fired 14 shots. There were 10 other people in the store at the time of the shooting. No word on the suspect.

—MyFoxPhilly.com

21-year-old Deran Maebery was shot and killed in the Westville Manor public housing project in New Haven, Conn., Monday evening. Police are investigating.

—The Courant

23-year-old Kareem Owens was found a Wilmington, Del., street suffering from fatal gunshot wounds Sunday evening. Police have no suspect information.

—Newsworks

One person was shot and killed at an apartment complex in Arlington, Tex., Monday morning, sparking a seven-hour standoff with police that ended with the gunman’s arrest. 32-year-old Joel Jonas White, who had access to “multiple weapons,” had fired six shots at the victim before shooting at police. He has been charged with murder.

—CBS DFW

A woman was grazed during a shooting in the Rainier Valley neighborhood of Seattle, Wash., Monday afternoon. Someone shot at two vehicles stopped in the roadway, and the victim, who was standing nearby with her child, was hit with either a piece of flying glass or a bullet fragment. Anyone with information is asked to call police.

—KOMONews.com

Shelby Love, 46, was shot in the leg in the Massey Hill neighborhood of Fayetteville, N.C., Sunday evening. Police are searching for Loteria Shavon Marsh, 34, who confronted the victim over possession of a video game console before the shooting.

—WRAL.com

19-year-old Jonathan Granger shot himself in the torso while hunting alone in Soldotna, Alaska, Sunday afternoon. He called his family to say that he was hurt, and when paramedics arrived he was lucid, but he died as they tried to save him.

—Anchorage Daily News

A man was found shot to death at a Motel 6 in Anchorage, Alaska, Sunday night. Investigators have not determined whether the shooting was accidental or intentional.

—Anchorage Daily News

A man accidentally shot himself in the torso in Huntsville, Ala., Monday night. He was treated at a hospital.

—WAAYTV.com

A 28-year-old man was shot several times and seriously injured at an intersection in Chelsea, Mass., Monday night. Police are soliciting tips.

—Boston.com

A man was shot and wounded in the front yard of a home in Seminole, Fla., Monday night. Three suspects fled in a vehicle and engaged in a pursuit with deputies that ended in a crash. Two of them were apprehended.

—ABC Action News

One person was killed and one person was injured in a shooting in Kansas City, Mo., Monday afternoon. The suspected shooter fled.

—The Kansas City Star

A man was shot and wounded following a fight at a convenience store in Manchester, N.H., early Monday. Police searched several apartments in the area but have not yet found the suspect.

—WHDH.com

A 22-year-old man was shot in the leg in the Algiers section of New Orleans, La., Monday night. Police are soliciting tips.

—NOLA.com

A man was shot and wounded when an unknown vehicle drove by and someone inside opened fire in Durham, N.C., Monday night.

—ABC 11

Michael M. Winston, 37, was shot in the buttocks at Cambridge Estates in Lafayette, Ind., Monday morning. Upon being shot, the victim ran, climbed a fence and fell to the other side, breaking his leg. Bryan V. Gavin, 21, was arrested.

—WLFI.com

According to Slate’s gun-death tracker, an estimated 9,948 people have died as a result of gun violence in America since the Newtown massacre on December 14, 2012.