What would cause a personal penalty to be issued ?
An objective argument ... a conservative conclusion " dated 25 October 2012 , Parncutt , after declaring his fundamental opposition to the death penalty in all cases including mass murderers such as Anders Behring Breivik , proposed restricting the death penalty to individuals who cause more than one million deaths , and claimed that influential " global warming deniers " could fall into that category if they slow progress toward reduction of greenhouse gas emissions and thereby cause the deaths of millions of future people .