If you want to attract police attention, forget open-carrying a gun; skip shaving for a few days, dress a bit scruffy, and try walking through a neighborhood, where one is not known, carrying a TV. Unusual behavior gets attention. This works quicker in areas with good police response time.
One big difference, of course, is that a TV is not much of a weapon. Want drama? Carry a huge screwdriver in your other hand.