There are many arguments about holding a gun.
For example, it is the right to defend oneself, the suppression function. Brazil, known for its high crime rate, is trying to alleviate gun control under the new president.
On the other hand, guns are used for many crimes. In the United States where people can have a gun, many gun shooting incident caused scores of casualties.
Could it be that society is getting better by having a gun indeed by ordinary people?