Who are They Protecting?

Something about a cover over a magazine in the grocery store makes me want to look to see what someone thought was soooo offending.   

When I looked behind the black cover, I saw this.

Why does this need to be covered?  Epecially when you look back at the first picture and the magazine below it that is not covered.  It's also has a woman with a very low cut shirt.  I just don't get it.