Winnenden School Shooting Memorial Service

WINNENDEN, GERMANY - MARCH 21: Candles stand on an altar, one for every victim of a school shooting at the Sankt Karl Barromaeus church after a memorial service on March 21, 2009 in Winnenden near Stuttgart, Germany. President Horst Koehler, Chancellor Angela Merkel and thousands of mourners hold a memorial ceremony to commemorate the victims of a school shooting. 17 - year old Tim Kretschmer opened fire on Wednesday, March 11, 2009 on teachers and pupils at his former school, killing 15 people and leaving many more injured. Kretschmer fled the scene and shot himself dead after being cornered by police. (Photo by Ralph Orlowski/Getty Images)