If you're just joining the taser debate, then you should catch-up by reviewing the Braidwood Inquiry taser report. One of his conclusions, even after carefully considering both sides of the debate, was that tasers are fully capable of causing death, by any of several taser-death mechanisms, even with healthy adults.
Also, search for the taser's "Curious Temporal Asymmetry", a simple observation that may be the death knell for denial of causality. Unless someone finds a rebuttal. Feel free to send any such rebuttals in. They'll get a fair shake, at risk of being publically shredded.
For the taser torture question, search out the 2008 Taser Glowing Cigarette Challenge. Send in your rebuttals.
Once you review and digest these primary reports and ideas, then your mind will be much less muddled.
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