The sound of a gun shooting is probably the worst and most terrifying sound that people want to hear. However, nowadays people in the United States are attacking by this sound more often due to the lack of gun control. The function of the guns is very limited. They are meant to be used as weapons in military operations such as defending their own countries. As we all know citizens in U.S. have the right to possess guns that should be used as one of the self-defending tools. And this is causing a big problem because people are misusing them. Therefore, I believe the guns should be banned in the U.S. It is no exaggeration to say that guns are the key element to cause the instability in the society of U.S. The citizens are possessing guns in U.S. and this is a huge risk for the government and the safety of society itself. According to [http://www.rulen.com/gunban/], 0.004% of the guns-possessions are used in the crime each year, and it is an enormous number. This included terrorist attacks, school shootings or just simple hatred murders. With guns, it seems that killing people becomes a lot easier to carry out. The recent Las Vegas Strip Shooting is the best example manifests this lack of gun control problem in U.S. On the night of October 1, 2017, the sound of the shooting appeared in a music festival on the Las Vegas Strip. The deadly sound came from a semi-auto machine gun which was operated by 64-year-old Stephen Paddock from the top of the Mandalay Bay hotel. He killed