CHRISTCHURCH, NEW ZEALAND – MARCH 29: Yusuf Islam also known as Cat Stevens performs during the National Remembrance Service on March 29, 2019 in Christchurch, New Zealand. 50 people were killed, and dozens were injured in Christchurch on Friday, March 15 when a gunman opened fire at the Al Noor and Linwood mosques. The attack is the worst mass shooting in New Zealand's history. (Photo by Kai Schwoerer/Getty Images)
