A "Non-Lethal Alternative" To Firearms?

Returning to an issue I discussed on Thursday, this photo (via) provides graphic evidence (in every sense) of the reality of taser usage. According to the Pittsburgh Post-Gazzette, police "used a Taser and pepper spray on one woman and charged her with disorderly conduct, failure to disperse and resisting arrest". Presumably, if the "tasers are a non-violent alternative to firearms" argument is to be believed, if it wasn't for the stun-gun the police would have had to blow her brains out.