There has been a lot of talk from a number of sites about "The Big Die-Off", some more credible than others. It would be extremely doubtful the U.N. would actually post their plan for mass-genocide. That doesn't mean they don't have such a plan, just that you're not likely to see it or be able to corroborate any leaked documents.
What we CAN do is prove some issues which could serve as supporting circumstantial evidence of such a plan, but that would be a stretch.
Never say never, but don't get duped.