First off, I think we should put PSAs over Bennett's stories. It might give people a reason to click them, especially if Dice donated some small amount of money to whatever charity group has the PSA out.
That said, "snuff" videos do educate people. One of the most famous (which was circulating as "Faces of Death: Senator Suicide" on Kazaa back when I was in middle school and was the talk of all of the kids on the bus) is Budd Dwyer's suicide by self-inflicted gunshot, which was recorded by a bunch of TV news crews who had come expecting him to resign from his position as a state senator after he was charged with corruption. Instead, they watched as this guy read a statement and then pulled a gun out of a manila envelope. If you watch the tapes - the unedited ones - you can hear people in the background pleading with him to drop the gun, because at the time they thought he was going to shoot at them. Then, he turns the gun on himself, while TV cameras are capturing the entire event.
The professor of one of my first college classes (I was a journalism major and don't regret it even though I can't find a job) started his class off with that video - and I think I was the only person in the room other than him who knew what was going to happen. The footage is horrifying, but it proves a point in that you can never go into a story expecting anything, and what happens if something like this occurs. Many of the media outlets that recorded Dwyer's suicide refused to show any of the footage at all, even before he pulled the gun out. Others showed it right up until the gun came out - I think one went so far as to show the manila envelope that had the gun in it but not the gun itself.
I learned two valuable things that day - the first that you can never take a story for granted. No one who was there that day thought it was going to be anything more than a minor politician reading off a prepared statement, and were only there to get perhaps 5 seconds of footage - Dwyer saying that he would be stepping down as a state senator. Instead, they wound up with a national-level story on their hands and one of the most well-known ethical dilemmas of journalism. The second was never to trust a manila envelope. Those things are nothing but trouble.