Here’s a good summary, from The Boston Globe, of issues related to the death penalty and why it needs to be abolished.
…money isn’t the only, or the best, reason to stop executions. The death penalty is not a deterrent to most deadly crimes. It is applied unevenly. It places the United States among the world’s most brutal regimes. And there are 130 other reasons: the 130 death-row inmates who were exonerated by new evidence. Their deaths would have carried an awful price tag.