The U.S. is remembering the lives taken and others reshaped by 9/11 on an anniversary laced with presidential campaign politics. President Joe Biden, former President Donald Trump and Vice President Kamala Harris stood together Wednesday at ground zero. Sept. 11 — the date when hijacked plane attacks killed nearly 3,000 people in 2001 — falls in the thick of the presidential election season every four years, and it comes at an especially pointed moment now. Regardless of the campaign calendar, organizers of anniversary ceremonies have long taken pains to try to keep the focus on victims. For years, politicians have been only observers at ground zero observances, with the microphone going instead to relatives who read victims’ names aloud. Most readers stuck to tributes and personal reflections of loved ones who died in the attacks. Increasingly they come from children and young adults who were born after the attacks killed a parent, grandparent, aunt or uncle.