Prison sentences: too long or too short?

There's been yet another mass shooting in the United States, again involving a military-style assault weapon. Rather than try for tighter gun control to stop these killings, some people are taking the gun manufacturers to court instead. Chicago-based lawyer Antonio Romanucci is acting for many of those affected by a shooting in Chicago on Independence Day last year. They're bringing a civil claim under consumer marketing laws. Could it be successful?

Listen to the full taping through BBC Radio 4.