But as Democrats, including presumptive presidential nominee Hillary Clinton, call for reforms to America's gun laws in the wake of the massacre, the National Rifle Association broke its silence Monday night to protest any laws that would restrict the right to buy or possess weapons.
In a late-night tweet storm, Chris W. Cox, executive director of the NRA Institute for Legislative Action, blamed the shooting on terrorism, as the shooter was a Muslim American who pledged allegiance to the Islamic State before going on his rampage.
And Cox said any restrictions to gun ownership would only provide Americans with a sense of "false security," rather than actually keep Americans safe.
Cox said the focus on gun control after the attack was "an illusion" by politicians to make it seem like "they're doing SOMETHING to protect us."
He added that the focus on gun control after the shooting is a "head-fake" that "will do nothing to prevent the a future attack."
Cox also said gun owners are "done with being blamed for the acts of madmen and terrorists."
It's in the NRA's interest to prevent any limitations to gun ownership.
A number of their members include gun retailers and manufacturers, who make a living off of gun sales. And those members' profits would almost certainly suffer if laws made it harder, or even illegal, for Americans to purchase certain types of weapons.
Each year, the NRA spends millions to get pro-gun politicians elected and in office.
Their efforts have helped kill a number of pieces of legislation in Congress, including a stricter background check bill introduced following the attack on an elementary school in Sandy Hook, Connecticut, as well as a recent bill that would have banned people on the FBI's "no-fly" list from purchasing a gun.