While tragic, the idea that these shootings are very common in America is false. More Americans die from drowning every year than in mass shootings, but you don't hear about that. Politicians on the left focus on mass shootings to garner political points. More must be done to address the root causes of the violence — simply curbing the rights of law-abiding gun owners isn't the answer.
Once again, the utter lack of gun regulation has created a tragedy. No one should have to risk their lives while they shop for the holidays, but too many politicians have accepted this as a way of life. Gun violence can be reduced while also maintaining the rights of gun owners, but more must be done to ensure that guns don't fall into the wrong hands.
There's a 50% chance that there will be at least 1.38 small firearms per capita in the USA by 2029, according to the Metaculus prediction community.