Libs so worried about harming the killers during execution that they never granted those they killed.
Liberalism is a great illustrator of the concept of "garbage in, garbage out."
Take a highly organized system, like the system of law and ethics that was built up over thousands of years in English common law, and inject nonsense into it at many levels (affirmative action and other types of "social justice" tinkering), and within a generation or two you have a legal system that protects the guilty and menaces the innocent.
And the bad guys laugh through their fingers at us.
Libs actually want execution to be horrible and painful so they can use that to turn people against it.
If we have painless, quick and clean executions, that takes a tool out of their tool box.