With gunfire weapons, one can protect or kill. The case of Colorado shooting is not telling Americans to quench owning weapons, but on the contrary urging them to buy more.
The U.S. is a country respecting freedom. While the police and soldiers have guns, so do the general public. With freedom in American minds, privacy is also secured by Law, hence one can kill an intruder to one’s premises. The reasons behind this practice are: Americans are above-par wealthy and they need some extra security against crime (also reflected in their possession of most nuclear missiles in the world); Americans are relatively selfish and self-protecting (people are putting security of oneself above public safety by advocating gun possession, plus developing nuclear weaponry whilst disallowing poorer countries to follow suit); Americans think they are so morally superior that most people can refrain themselves from gun abuse.
In fact, if some would like to prevent crime with guns, they should first think about how easily guns can cause crime. For the first time in history, after many gun-related crimes, people from the rest of the world should become hesitating when considering emigration or traveling to the U.S. and other gun-approving countries. As Chinese ourselves, we applaud for our own better-off personal safety without undiscriminated gun possession. When guns are publicized for eliminating their inner lack of security, Americans are haunted with even greater homicidal fears.
