In countries with social problems that have strict gun laws, criminals find other ways to hurt people.
I used to live in China, criminals would go into train stations with swords and kill dozens, on what seemed like a "too-frequent" basis, as in, even as a foreigner I noticed these events in news or small talk at work. The police in China don't carry guns so it is difficult to stop a criminal with a weapon until backup help arrives.
Another common issue in China was deranged people going into daycares or kindergartens with bombs and blowing the place up. Just recently a guy blew up a grocery store, but the bomb was super powerful and took out a nearby apartment block also.
When trying to debate with liberals about gun control, I was aware of the UK problem. In researching knives in the UK I was surprised at how big of a problem it is over there, and the stories of people being knifed are pretty chilling. There's even a show on Netflix of people in Scotland taking knife training to defend themselves. Uh, who's up for a knife fight?!?!?
Difference between a gun and a knife is a gun is a big deal, it is noisy and usually used at distance and/or without care in aiming or skill to hit target. A knife is quiet, discreet, direct, effective and the victim and witnesses don't even know what happened until the criminal is around the other block.
