As dignitaries gathered for this year’s Ground Zero memorial service to honor those killed in the 9/11 attacks and remind American of the cost of terrorism, one man stood out for the New York City crowd. “Donald!” voices in the crowd began calling as former President Donald Trump was spotted among dignitaries at the event, as shown in a video posted to YouTube. Shouts for Trump continued as Trump shook hands with Vice President Kamala Harris, hours after their debate on Tuesday night. President Joe Biden, who was between Trump and Harris, also later shook hands with Trump, according to the New…