Also, don't use a Taser for self-defense.
It won't work. Or, rather, it will -- for as long as the juice is on. Two seconds after that, not so much.
See also, other famous incidents:
Sergeant Koon then shot King with a Taser. King groaned; momentarily fell to the ground; then stood back up. Koon fired the Taser again, knocking King to the ground.
King then stood up and charged in the direction of Officer Laurence Powell.