There are 12 links on the first page of Google results for “fema camps.” 3 of them are to videos claiming they have footage of concentration camps being built in America. 7 of them are to websites advancing the meme. Only 2 of them are to sites debunking the myth, and the first of those is below the fold.
Popular Mechanics has the best reporting about the FEMA camp conspiracy theory, and it’s not even on the page.
The Shotgun Approach 