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Mistakes have been made in the past in the application of the death penalty, and innocent persons have been executed for crimes they did not commit. For a variety of reasons, hundreds of innocent individuals have been mistakenly put to death. Since DNA evidence began to be used, hundreds of death-row inmates have been proven not guilty. Without DNA findings to clearly identify whether a suspect is the real criminal or not, many innocent individuals would have already been killed. Research showed that individuals have been wrongfully convicted of murder and executed. It is too late to correct those mistakes now, but at least, it is time to admit the fact that it is awfully unjust to impose a sentence that cannot be reversed when mistakes are made. The only way to avoid taking innocent lives is to abolish the death penalty.