U.S. Sen. Bernie Sanders praised Gen Z for its progressive ideals during a Monday night rally in San Antonio but reminded members of the youthful crowd that they must go to the ballot box this fall if they want real change. "You have led this country in the fight against racism, in the fight against sexism and in the fight against homophobia, and unlike Donald Trump, you know climate change is real," the Vermont independent told 700-plus people packed into St. Mary's Strip nightclub Paper Tiger. "But ... part of the reason I'm here tonight is no matter how strong and progressive the younger generation may be, it don't matter unless you're involved in the political process, unless you vote, and ... unless you make a lifelong commitment to fight for economic, social and racial justice."