What creature is this?

I was looking at these cute monkeys in Indonesia (from a single specie).It was all cool until:I turned to a page where there was a picture of the same monkey with a blood splattered (obviously busted over the head with a club) head. The caption read something to the effect of: "Christian regions commonly use this monkey as food".(Nice)I suppose this ugly thing will be eaten (if the monkeys are burnt with fire, I suppose this will possibly be), actually.Edited by LamarkNewAge, : No reason given.