"Gun rights" and "gun control" have become huge political and cultural issues in the USA
Gun control?
“Gun control” is a broad term that covers any sort of restriction on what kinds of firearms can be sold and bought, who can possess or sell them, where and how they can be stored or carried, what duties a seller has to vet a buyer, and what obligations both the buyer and the seller have to report transactions to the government.
Sometimes, the term is also used to cover related matters, like limits on types of ammunition and magazines, or technology, like the type that allows guns to fire only when gripped by their owners.
In recent years, gun control debates have focused primarily on background checks for buyers, allowing people to carry weapons in public, and whether to allow the possession of assault rifles.
America can prevent shootings. But it has to come to grips with the problem.
What sort of developed country lets people carry guns in public? It's insanity. America is just so damn weird with their gun obsession. I've never seen any other country get so carried away with gun ownership. It's just nuts.
It's not actually legal to openly carry guns in public everywhere here in the U.S. It depends on the state. To answer your question, it's because of how the U.S. was founded. It is also because many Americans are paranoid about the government and each other, and because the National Rifle Association is the second most powerful lobbying group in the country.
The rifle pictured above is an AR-15 not an assault rifle. The AR in “AR-15” rifle stands for ArmaLite rifle, after the company that developed it in the 1950s. “AR” does NOT stand for “assault rifle” or “automatic rifle.” - https://www.nssf.org/msr/
Recent statistics from 2016 show that knives actually kill nearly five times as many people as rifles that year.
According to the FBI, 1,604 people were killed by “knives and cutting instruments” and 374 were killed by “rifles” in 2016. -
http://dailycaller.com/2018/02/19/knives-gun-control-fbi-statistics/
People in general do not want to see more killing by any method. It has been proven that guns save lives.
Almost all national survey estimates indicate that defensive gun uses by victims are at least as common as offensive uses by criminals, with estimates of annual uses ranging from about 500,000 to more than 3 million per year, in the context of about 300,000 violent crimes involving firearms in 2008. - https://www.investors.com/politics/columnists/how-many-lives-are-saved-by-guns-and-why-dont-gun-controllers-care/