Sam Smith, Barack Obama and Jared Leto among celebrities reacting to New York terror attack

At least eight people were killed, and 11 others were seriously injured on 31 October, as suspected driver Sayfullo Saipov drove a rented Home Depot flat-bed truck along a path before slamming into a school bus. Millions of people, including celebrities, took to social media to offer condolences and express their outrage at the attack.