A Missouri candidate for the U.S. Senate made national headlines Monday for an online ad in which he totes a shotgun.
In the ad, Republican candidate Eric Greitens encourages supporters to go hunting for "RINOs" -- Republicans in Name Only. Greitens is among the top-polling candidates in the Republican primary to fill the seat being vacated by U.S. Sen. Roy Blunt.
Critics blasted the ad and Facebook pulled it down. But Greitens' campaign defended it as metaphorical.
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