I regret to say I did watch the video early on before it was authenticated and there is NO way in hell it should have been shown to a grade 10 class!! Or any high school class.
If this teacher was so enthusiastic to show this to kids (almost all under 16!) then he/she should have asked for parental consent, not to mention approval from the school admin. But the answer would have correctly been a resounding NO.
As for kids and others saying they see worse on TV/PS3's etc? Bullshit. This was not some Texas Chainsaw Massacre movie or whatever. This was a human being who had been alive and breathing moments before. (in fact, even though restrained and clearly drugged, Lin WAS alive and moving around in the first minute or so of the vid!). Hacking through limbs, fucking the torso and then using a wine bottle, putting a little puppy to feed on the severed torso, etc etc etc. I'm sorry for the graphic deets but most have been publicized already. This wasn't just some bad judgement call on the teacher's part, he's got to be fucked in the head to show this to kids!
Every time I see pix of Jun Lin's face, it breaks me down having seen what was done to him and if I could turn back time a couple weeks, I would never have watched it.
If I had kids that were shown this video, getting fired would be the least of this asshole's worries!