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DENVER -- Gun violence prevention advocates former Congresswoman Gabby Giffords and former astronaut Mark Kelly are in Denver discussing gun violence prevention. The two held events throughout the weekend.

On Saturday, the two led a roundtable discussion with local advocates. They discussed ways to reduce gun violence and why they believe Hillary Clinton is the only candidate who can stand up to the corporate gun lobby.

On Sunday morning, Giffords and Kelly launched a canvass kickoff for Hillary Clinton on 16th Street.