I supposed there has been this fad going around on facebook where perpetrators make links with culpable images to attract people to click on it, upon which clicking, will unknowingly add the same link and picture onto their own facebook profile for the world to see.
Whatever the motives these perpetrators are (I would guess: to reveal culpability in others), it doesn't excuse these from their own action, not to mention being a stumbling blocks to others. Hence it is twice evil. Thus, I said: perpetrators.