The shooter killed an 84-year-old man, a 75-year-old woman, and left another woman wounded, before a person in the room restrained and held him until police arrived.
After he was shot dead, fans of rapper Nipsey Hussle remembered all that he did for the South L.A. community.
No campers or staff were injured, but the gunman was later pronounced dead in the hospital after being shot by police.
Police said a "large" crowd that needed evacuation triggered multiple law enforcement agencies to respond.
Officials say two men are facing murder charges and have been arrested in Virginia in the deaths of two bystanders in last weekend’s shooting in a busy entertainment district in Philadelphia.
After the mass shooting at a Texas elementary school, schools around the country pledged to boost security measures and increased the presence of law enforcement on campus — partly to reassure parents and students.
In all, 14 people were shot and three people struck by vehicles trying to flee the scene, police said. Chattanooga had another shooting with multiple injuries last weekend.
Quarius Naqua Dunham, who was visiting South Carolina from New Hampshire, was fatally shot in his neck and his father shot in his leg, authorities said.
The shooter bought an AR-style semi-automatic rifle on the afternoon of the shooting and a handgun on Sunday, Tulsa's police chief said.
Two special prosecutors have decided not to charge a Wisconsin sheriff’s deputy in the fatal shooting of a man sleeping in a park.