Standard of Decorum

Men in rural Iowa, many of them farmers, listen to presidential candidate Ron Paul deliver remarks inside a restaurant.

    Is it bad etiquette for men to wear hats indoors?
   When I was growing up, men removed their hats when entering a building. Not anymore. Some men have crossed that line of etiquette. The only places you won't see hats on men are in churches and formal restaurants.
   Women wearing hats indoors has always been acceptable. That's because they've worn 'statement hats' that highlight fashion over functionality.
   Lots of men wear caps. They used to be worn to shield the eyes from sunshine. That's pure functionality. But nowadays, with corporate logos and other graphics etched on caps, they've become statements of fashion. Does that make it okay to wear them indoors?
   Fedoras are statement hats. Back in the day, millions of men wore them. They took them off indoors.
   My sense is that a majority of men, myself included, still don't wear hats while indoors. To do so is poor etiquette. Lots of people might reject that notion.
   Widespread ignorance of etiquette is no excuse to lower one's standards of decorum.

Men eat lunch at a restaurant near my home.