So who is watching Broncos v Ravens?

I don't understand how any Saints fan can say this, other than when we play him. His dad gave everything to New Orleans, and he grew up in the city. What can any Saints fan possibly have against Peyton Manning?

There is some story from a few years back where he took advantage (Archie) of a property tax benefit/loophole of some kind that some took to mean he didn't love New Orleans enough. Plus he didn't force his kids to go to college in Louisiana, which some take as an insult. I don't really get it either.