Bizarre news straight out of a wuxia movie from Shanghai, China, where a "28 year-old man with the surname Yang" set fire to a police station and killed five officers, wounding five more. Yang was was armed only with a knife.
Apparently Yang carried a grudge against the police after being arrested as a bicycle thief. Unlike Britain but like the United States, Chinese police officers are typically issued firearms.
It was not clear how the attacker managed to stab so many police officers and why he was not detained after setting a fire outside the building.
Obviously Yang was trained by a master.