The carnage at a gurdwara in Milwaukee also showed that the US can't prevent its citizens from domestic crimes due to "loose" gun control laws and the shooting highlighted growing religious hatred in that country, the Global Times said in an editorial.
"Despite having the most advanced defence ability, US government cannot prevent its citizens from falling victim to domestic gun crime," said the editorial titled 'Temple shooting highlights festering US issue'.
"Freedom is an important element of US soft power, but the freedom to own a gun probably has the opposite effect," it said.
"The twin shooting incidents at Aurora, Colorado and attack in the gurdwara in Milwaukee, showed that Washington has long failed to effectively address the holes in the gun law".
"After the latest carnage, the American public has started speculating about when the next tragedy will happen. To politicians, gun ownership is an explosive issue," it said.
"The shooting also highlighted domestic hatred, another nagging issue in US politics. The shooter, launching his attack at a congregation in a Sikh temple, was thought to be venting his anger toward Muslims or immigrants," it said.
"Amid the background of lingering economic woes, the US has been plagued by a growing mood of anger, giving rise to domestic terrorist incidents," it said.
"The repeated incidents also offer lessons to developing countries, which tend to model their social governance on developed states."
"If free gun ownership were adopted in developing countries such as China, it would spell disaster for public security and order. In many other aspects of social governance, tough measures are also necessary to fit China's domestic situation," it said.
Six people were gunned down in the Milwaukee gurdwara, Wisconsin on Sunday. The gunman was also killed.