Thousands of self-isolated residents participate in flash mob event in Vancouver, Canada

A resident makes sound with cookware on his home rooftop while participating in a flash mob event in Vancouver, Canada, March 25, 2020. Thousands of self-isolated residents participated in a flash mob event organized via social media at the evening by making sound at their home balconies to show support for front-line healthcare workers who help fighting the coronavirus. (Photo by Liang Sen/Xinhua)