Good morning, Bulletin readers. At opposite ends of the country, bullets rang out at festive summer gatherings this weekend, leaving families and communities reeling. Those stories lead your Monday roundup.

Receive this daily news briefing by email every morning. Sign up here.

WHAT TO KNOW TODAY

Fifteen people were shot at a festival in California. Three people were killed and 12 others were wounded by a gunman on Sunday evening at the Gilroy Garlic Festival in an agricultural town in Northern California. Witnesses said the shooter was dressed in fatigues, carried a rifle, and “definitely was prepared for what he was doing.” The suspect was killed by responding officers. Police are searching for a second person of interest, who may also have been involved in the shooting. A 6-year old boy was among those killed.

A dozen people were shot at a block party in Brooklyn. One person was killed at the Saturday gathering in the Brownsville neighborhood, which was sponsored by several local officials. A child was among the wounded. Police are searching for two gunmen.

NEW from THE TRACE: Mexico says it’s working with the U.S. to stop gun smuggling, but Washington isn’t offering details. Earlier this month, the Mexican government announced a new joint operation with the United States to crack down on cross-border gun trafficking. But the American government won’t confirm that it’s signed on to the new effort, details of which remain murky. Alex Yablon has the story.

A federal judge in California upheld the state’s ban on assault-style weapons. A U.S. District Court judge threw out a challenge to the state’s ban on semiautomatic rifles, saying they’re “essentially indistinguishable from M-16s” carried by U.S. troops.

A Florida judge took some of the teeth out of the state’s pre-emption law. A judge in Tallahassee struck down a 2011 provision that allows local officials to be fined $5,000 or removed from office if they enact gun regulations stricter than the state standard.

A local gun group in New Mexico is suing to reverse recent gun reforms. The New Mexico Patriots Advocacy Coalition filed suit last week to overturn universal background checks and a law that bans guns for anyone served with an order of protection.

A former school shooter was killed in a car crash. Drew Grant, one of two perpetrators of a 1998 shooting at Westside Middle School in Arkansas that left five people dead, died in a collision in Jonesboro on Saturday night. Grant, who changed his name from Andrew Golden after he was released from prison in 2007, applied for a concealed carry permit in 2008 but was denied.

ONE LAST THING

A street preacher who counseled grieving families was gunned down in Pittsburgh. The Reverend Sheldon “Sarge” Stoudemire, an ordained Baptist minister, was killed after denying someone admission to the homeless shelter where he was working early Saturday. A 19-year-old was charged with murder. “Reverend Stoudemire would have been the first one to forgive him,” a local police officer told the Pittsburgh Post-Gazette. “If he would have survived this, his first meeting would have been with that kid.” Stoudemire, 57, was a former Army Ranger and a boxing champion who was frequently called by police to comfort families who lost loved ones to shootings, sometimes at 2 or in the morning.