On my Facebook, my videos and statuses are fairly well-received. But when I put a video like this one and urge people to watch it so they will know how animals are treated, there is never a comment or "like" or any clue that anyone watched the video.
Think about the Holocaust and how those people died. You can see by this video how they suffered. I watched a longer version of this video, lasting 13 minutes, and the screams and suffering are continuous at these slaughterhouses.