Hillary Clinton laments US extremism and calls for unity on 9/11 anniversary

Hillary Clinton tells CNN: ‘We were able to come together as a country at that terrible time, we put aside differences.’ Photograph: Joel Saget/AFP/Getty Images

Hillary Clinton seized the opportunity presented by Sunday’s 21st anniversary of the September 11 terrorist attacks on New York and Washington to make a thinly veiled attack on the extremism and divisiveness stoked by Donald Trump, as she called for a return to national unity.

The former US secretary of state and first lady invoked the bipartisan mood of the country in the wake of the 9/11 attack in which almost 3,000 people were killed.