Well, let's look at that one.
Except for Japan, most of the other G-7 countries have ended capital punishment.
en.wikipedia.org
While we lock up 2 million people thanks to Reagan's War on Drugs, and the Prison-Industrial Complex, the European countries lock up the following numbers of people.
Japan - 47,064
United Kingdom - 83,000
Germany - 58,000
Italy - 53,000
France - 62,000
Canada -38,000
worldpopulationreview.com
So, um, no, despite people who get a woody at the thought of locking up poor people of color, prisons don't make us safer. They make things worse.
They should not have passed a background check.
They went into a gun store and bought guns anyway.
A court found that the gun store AND the gun maker were liable for failure to keep guns out of their hands.
The Gun industry ran off to Congress to get special protections from liability laws rather than, you know, cleaning up their act.
Because getting guns to criminals is part of their fear-based business model.