Can anyone explain to me what the whole "FEMA Camp" conspiracy is supposed to be all about? The who, what, when, where and how of the whole business (see details)

Where are these FEMA camps?

How many of them are there?

Who, exactly, is going to be rounded up and sent to these FEMA camps and why, for what purpose?

Who is going to do the rounding up of the people who are going to be sent to these FEMA camps?

And what happens to these people, once they are put in the FEMA camps?

I certainly don’t believe it, but I also don’t get it.

I am particularly interest in the who and why of it.

Can anyone give me an outline of it so I at least know what the people who believe in this thing are thinking?