The recent terrorist attacks in Paris prompted millions to take to the streets to show national solidarity and to pay tribute to the 17 people murdered. The attacks have also inspired a lot of soul-searching, as the French struggle to understand how three men, born and raised in France, could have trained the murderous intent of Al Qaeda and the Islamic State on their own countrymen. Prison was the crucible of their radicalization. There are five million to six million Muslims in France, less than 10 percent of the total population, but 60 percent of France’s prison inmates are of...
