The campaign ad claimed that 2,900 children die from gun violence every year—a figure disputed by fact checkers.
The guest has been arrested for carrying a concealed firearm in his backpack while trying to enter Disney's Animal Kingdom theme park.
Organizers want to shake political leaders into action on gun control.
KeShon Henderson was was shot just one day after being offered a full-ride scholarship to play basketball at Judson University in Elgin, Illinois.
"That moment was just such a startling thing to see in the middle of something so chaotic," said CBS 3 reporter Alexandria Hoff.
Connor Betts, who shot dead nine people at a bar in Dayton, Ohio, was left-wing and a violent misogynist.
A young girl ensured a toddler was safe at the Gilroy Garlic Festival shooting while the gunman attacked his parents.
Under Texas law, a peace officer can carry a weapon in a public establishment, even when not on duty.
McDonald's customer in Georgia, apparently irritated by cold fries, goes armed into the restaurant kitchen and lets off her firearm.
Doris Vallejo-Godoy, 41, was in Austin's La Catedral del Marisco with her girlfriend at the time of the altercation, which was allegedly sparked after a man called her "bad names."
Progressive Twitter users lamented the massacre and used it as an example of the consequences of weak laws on gun ownership.
An animal rescue organization is offering a $5,000 reward for information.
Birmingham Police are still trying to establish how the incident came about.
Local police responded to reports of an active shooter in the community of Hampstead, North Carolina.
Daejona M. Holmes, 15, was charged with two counts of second-degree murder in the shooting deaths of her parents.
The officers were rushed to hospital.
She then turned the gun on her son's girlfriend.
One day after five employees were killed, the newspaper kept its promise to put out its Friday edition.
Tasman William Maile was charged with child abuse homicide.
A mother and daughter were shot and taken to surgery.
The media only seems to care about the death of black men when the person doing the killing is wearing a blue uniform.
Four people were shot and killed at a Waffle House in Nashville. The suspect is on the run.
The chemistry teacher was arrested for allegedly failing to safely store a firearm and later released on a $250 cash bond.