Are TASERs A Threat To The Natural Human Right To Life?

I am actually a supporter of TASERs but from what I see they tend to be overused because they are branded as non lethal. They are a tool for law enforcement to use and one side effect of that use is the possible death of the target.

Taser International Inc, who sells TASERs, claims that 9000 lives have been saved while Amnesty International claims that 156 have been killed by them in five years. I believe both figures are inflated. Taser’s claim depends on police using a TASER instead of a gun which is not the case where a teenager was yelling “I want Jesus” and when confronted by officers who tried to calm him became combative so they TASERed him. They shot him a second time when he continued to struggle.

The question I have to ask and this article does not answer is how would of this type of confrontation been resolved before TASERs were introduced. In what ways is the new method better/worse than the old way. Since I do not have this in other information to adequately evaluate the situation I can not say whether this was a unfortunate death that is the result of better law enforcement or whether it was a death that could have been avoided by restrained use of TASERs.

Source 1 is an article about a death attributed to TASER.