I think it speaks for itself. But here how I would go around to doing it. Jurraisic park style, I would create several breeds of raptors, as to make sure where one fails the other succeeds, and place them in rather sparsely populated or just plain wild areas. They will then grow to outstanding numbers due to their dominanting species. After exhausting their resources, they will spread out, thus invading human territory. The timing is crucial, but I don't believe humanity would be prepared to face raptors in such dispersed multitude. Btw, this is done for humanitarian reasons: Less fat people, for obvious reasons. More exercise, put Michelle Obama out of her job. If you are one that is a particular believer in evolution, this will break the stagnation that society has on the survival of the fittest. Overpopulation will be solved. More quality family time. Less lag caused by over traffic on the inter webs.