FEMA Camps?

What's the basis for the claims of these FEMA Death Camps that people keep spouting? I've seen the videos of FEMA coffins, but has anyone stopped to think that these may be gathered in a case of national emergency such as Hurricane Katrina? The majority of these 'coffin liners' seem to be gathered in or around Georgia, which is within the main hurricane effected areas of the US.

I'm just confused. And what would the NWO gain from reducing the worlds population down to 500 million or less? It would just mean a loss in man power to create, and their force used to police the civilian population would be out numbered by those they aim to police.

Please explain, and thanks .