Several issues are raised with regard to lethal injection.
Generally, they are:
1) The murderer experiencing pain during execution;
2) The ethics of medical professionals participating in executions; and
3) Proper training of execution personnel.
1) PAIN AND LETHAL INJECTION
The evidence, including the immediate autopsy of executed serial murderer/rapist Michael Ross, supports that there is no pain within the lethal injection process.
There is a concern that some inmates may be conscious, but paralyzed, during execution, because one of the three drugs used may have worn off, prior to death.