Would greater controls on gun ownership save lives or simply limit freedom? It is the debate that renews after every mass shooting in the US.

In August 2012 six people were shot dead at a Sikh temple in Wisconsin by a white supremacist.

Frustrated by the lack of action in Congress and what he deemed insufficient attention to the massacre by President Barack Obama, the son of one of the victims is running for Congress on a gun control platform.

James Coomarasamy reports on Amar Kaleka's upstart challenge to 2012 Republican Vice-Presidential candidate Paul Ryan.

Produced by Lindle Markwell; filmed and edited by Peter Murtaugh

Altered States is a series of video features published every Wednesday on the BBC News website which examine how shifting demographics and economic conditions affect America on a local level.