Americans have remembered 9/11 with readings of victims’ names, volunteer work and other tributes 21 years after the deadliest terror attack on US soil. A tolling bell and moment of silence began the commemoration at ground zero in New York where the World Trade Centre’s twin towers were destroyed by hijacked-plane attacks on September 11 2001. It came weeks after the chaotic and humbling end of the Afghanistan war that the US launched in response to the attacks. Some Americans are joining in volunteer projects on a day federally recognised as both Patriot Day and a national day of service and remembrance. How has the fight against terrorism changed after 9/11 attack ?
