USA: Virginia Tech shooting aftermath: Students return to classes

Classes have resumed at Virginia Tech university - scene of America's worst-ever mass shooting, a week ago today. There are just two weeks left until the end of term, known as 'spring break' - the traditional time for heavy student partying in the US. But it's likely to be a much more sombre holiday for the students coping with this tragedy. A look at gun culture in the USA.

ITN Source | April 23, 2007