During his 1961 inaugural address, John F. Kennedy famously implored a new generation of Americans to serve their country. Almost 64 years later, Jack Schlossberg, his only grandson, is now heeding the call for generational change from Democratic voters as the party’s leaders continue to cling to office well into their 70s. Schlossberg, 32, announced Wednesday morning in a video posted to social media that he’s running for the House seat of 78-year-old Rep.