The 75-year sentence handed down to convicted cop killer Justin Bourque has reignited the debate over the death penalty in Canada. Some are satisfied with what effectively will be a life sentence without parole for Mr. Bourque. Others think it's not enough and would like to see him executed. But is bringing back the death penalty the answer? The issue then becomes, how do we distinguish between murderers who can be rehabilitated and those who won't or can't?