Opposition to the death penalty is a matter of opinion held by the church hierarchy. It is not a matter of dogma. No Pope has issued an ex-cathedra statement against the death penalty.
The people in the pews are just as Catholic as the Pope and are entitled to their opinions too- until the Pope makes the official call.
Then to hold a contrary opinion would make them heretics. - Tom
If someone is catholic as i am and believes that abortion is a crime as i do. Then someone must also be against the death penalty for the same reasons.
faith and the position of your church isn´t ( at least in my opinion) something for cherry picking.
But faith is a individual and personal decision and should not be a part of politics