Oh bull fucking shit, a taser would so have been effective against a 15 year old. Its a child you monster. The police shouldn't be shooting first in any situation unless the assailant has a gun themselves and they can be sure. Its ridiculous how the police escalate force so ridiculously quickly. Anyone defending that rapid escalation is an animal whose opinion should be instantly discounted. These are children that are being killed. Shut all the way up.