On the same day Hillary Clinton is set to claim the Democratic presidential nomination, the National Rifle Association is coming out with an ad saying Americans' "right to own a gun for self-defence is at risk in this election".
The group says it plans to begin airing the 30-second ad on Thursday. It features a rape victim who confronted President Barack Obama over gun rights at a town hall meeting this year.
She tells viewers that "self-defence is your right. Don't let it be taken away."
Word of the ad campaign comes as the Democratic Convention features speeches on Wednesday night from relatives of the nightclub shooting in Orlando, Florida, and the 2012 shootings at Sandy Hook Elementary School in Connecticut.
The ad's narrator says Clinton "would take away your rights".
