Obama made reference attack in China that took place about the same time as the Sandy Hook Massacre. In that attack, a man who had no prior mental health history, attacked a school of children with knives. Obama characterized the attack as minimizing the number ‘people hurt’ because the man only had knives rather than a gun, implicitly praising the ‘no gun policy’ of China.
But that attack in Dec. 2012, was just one of a series of knife attacks, over which 25 were killed, and many more seriously injured. Some of the children in the attack Obama referenced lost fingers and ears, but I guess that was okay because there were no guns.