1.   Death-penalty proponents have not proved that executions deter murders or have any advantage over a maximum sentence of life without parole.

2.   Executions do no deter crime.

3.   Study after study has shown that executions do not deter further murders.

4.   The court considered, and rejected, the argument that executions deter violent crime.

5.   China believes executions deter crime.

6.   Estrada has refused to pardon Echegaray, saying his execution will deter similar crimes.

7.   Estrada has refused to pardon Echegaray, saying the execution would deter similar crimes.

8.   Estrada, however, has refused to pardon Echegaray, saying his execution will deter similar crimes.

9.   Estrada added the execution would deter more rapes and other crimes.