The excerpt sort of ends at a part that seems to possibly give the impression that the article is claiming people shouldnt have guns. This is not the thesis of the article. It argues people do need guns to protect themselves from others but that in the case of an oppressive government guns would do little good against the firepower of the United States military.
Well, maybe. The Iraqis are able to prevent us from pacifying that country because the country was full of small arms. With the right leaders, a people can make life miserable for the most powerful tyrant with the most powerful army.