As horrible as Dr. Wright's advocacy of killing five Muslims for every American troop killed, it begs to be put in its proper historical context. Examples via the research of posters at Eschaton:

Over the course of two days, 2,300 civilians were executed in Kragujevac as punishment after resistance forces killed 10 German soldiers and wounded 26.

General Franz Boehme was captured on May 9, 1945, and put on trial at Nuremberg for war crimes and crimes against humanity--specifically, for the mass executions of Serbian civilians in Kragujevac and adjoining towns and villages. He committed suicide prior to his arraignment on May 29, 1947.

In March 23, 1944, a bomb exploded in Rome killing thirty-two German police. Hitler ordered Field Marshal Albert Kesselring, to execute ten Italian hostages for every German killed in the attack. Kesselring carried out Hitler’s command assembling 335 innocent civilians, ten more than required. The people were herded into Ardeatine Cave and shot in the back as they knelt among the corpses of those killed before. Following the murders, the cave was demolished with explosives in an attempt to cover up the crime, but Kesselring was subsequently convicted of two counts of War Crimes and sentenced to death.

Although Reich Fuhrer Hitler was able to escape justice by killing himself, his top field marshals and members of his inner circle were tried in Nuremberg, Germany for acts committed both before and during World War II.