During the Democratic National Convention, plenty of former politicians (including Barack Obama) took the stage to give speeches, many of whom advocated for Vice President Kamala Harris’s bid for president. Gabby Giffords, a former representative for Arizona, was one of the women to take the stage, using her time to advocate for better gun control in America.Gabby was the victim of a mass shooting in 2011 when a shooter targeting a “Congress on Your Corner” event in Tucson, Ariz., shot her and 18 others. Before the shooter was subdued, he killed Chief U.S. District Court Judge John Roll, Gabby’s staff…