FOX had to reject the following ad due to NFL rules about "ad categories". The guy who does commentary afterwards makes some solid points as well.
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This isn't just interesting based on the issues the guy in the video discusses (love the argument about death stats in beer vs guns), but also from a business stand point.
Daniel Defense spent NOTHING to make this ad. No name actors, no effects, no nothing. Just a film crew and some actors at a house. They then submit it, knowing it'll get rejected, and voila, free publicity for minimal cost!