Photo taken on March 16, 2019 shows cards and flowers people placed to mourn the victims of the attacks on two mosques in Christchurch, New Zealand. It was revealed that a 28-year-old Australian man, Brenton Tarrant, conducted terrorist attacks targeting mosques in Christchurch and later was arrested by New Zealand Police. At least 49 people were killed and 48 are hospitalized now. (Xinhua/Guo Lei)