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

Former US secretary of state makes an impassioned attack on turn towards extremism and divisiveness in American politics

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.