US Gun Control: Country on edge in wake of mass shootings

As the suspect in last weekend's mass shooting at a Texas Walmart store confessed that he was targeting Mexicans... a heavily armed man has been arrested near a Walmart in Missouri. Wearing body armour, fatigues and carrying a rifle, he was detained at gunpoint by an off-duty fireman. Harry Horton reports. #US #GunControl #MassShooting