Crowds gathered in somber reflection near the Rwandan capital of Kigali on Tuesday, marking the 15th anniversary of the start of a 100-day genocidal massacre in Rwanda in which an estimated 800,000 people were brutally killed. Rwandan President Paul Kagame addressed thousands during an emotional candle-lighting ceremony, criticizing the international community for not doing more to prevent the bloody wave of violence. “I remind those experts that they need to go back to school,” Kagame told reporters