General Discussion

Standards vary so much by state. I only respond because your post seems to minimize the wandering bad officer issue that has improved, but still remains.
As far as I can tell, South Carolina requires the council can only revoke certification if the officer falsified info on application for certification or training, did not complete required training, or one of the following:
a. Conviction, plea of guilty, plea of no contest or admission of guilt (regardless of withheld adjudication) to a felony, or a crime punishable by a sentence of more than one year (regardless of the sentence actually imposed, if any), or a crime of moral turpitude in this or any other jurisdiction;
b. Unlawful use of a controlled substance;
c. The repeated use of excessive force in dealing with the public and/or prisoners;
d. Dangerous and/or unsafe practices involving firearms, weapons, and/or vehicles which indicate either a willful or wanton disregard for the safety of persons or property;
e. Physical or psychological abuse of members of the public and/or prisoners;
f. Misrepresentation of employment-related information;
g. Dishonesty with respect to his/her employer;
h. Untruthfulness with respect to his/her employer;
i. Violations of criminal law resulting from administrative inquiries.
Provided however that in considering whether to withdraw certification based on misconduct, the Council may consider the seriousness, frequency and any mitigating circumstances surrounding the act or omission constituting or alleged to constitute misconduct.
It seems that this horrible act may not fit in one of these categories and even if it did, enforcement is somewhat discretionary.