BBC - Mark Mardell's America: Armed and ready to shop

BBC - Mark Mardell's America: Armed and ready to shop

Elm Grove, near Milwaukee, Wisconsin

Other customers stare as Nik Clark and Kim Garny do their weekly shop at a large upscale supermarket. It's hardy a surprise as a TV camera is trailing behind their trolley. But people would do a double-take even if the BBC weren't in tow. In some ways Nick wants them to look.

There's a revolver amid the ravioli, an automatic among the avocados.

Like cowboys out of Westerns, the couple carry handguns on holsters on their hips. She has a Smith and Wesson .38 special with a cute pink grip that makes it look almost like a toy. He has a rather more chunky Glock.

Wisconsin Open Carry. Groups like this have been springing up all over the States in the last year and they've been making an impact in the last week or so, getting Starbucks in California to agree people should be allowed into their coffee shops carrying guns. The groups are made up of people who want to make a point about the Second Amendment right in the Constitution to bear arms, by bearing them openly. Some want to make a point and test whether or not private firms like shops and restaurants recognise that right.