What happened in the game last night?

This was a very hostile away game, where the crowd was insanely loud (to me, at least, it seemed louder than usual).
They had to be piping in crowd noise over the PA again because I could count the filled seats easier than the empty seats. Hell my wife even noticed how empty the stadium was. She pointed that out right after she pointed out the white on white "costumes" the Saints were wearing.