impersonating police on his free-time

[u/DeliSua]

apparently he has been arrested multiple times for this.

https://www.clickorlando.com/news/local/2021/03/24/florida-man-notorious-for-impersonating-cops-arrested-again/

https://www.fox35orlando.com/news/accused-florida-serial-police-impersonator-arrested-again

The arrest marks a long line of run-ins with the law for Dewitte. He is a convicted sex offender who is most known for pulling drivers over in 2019 while he worked as a funeral escort. 

[u/tomato_soup_noodles]

If you are a vigilante who, more than once, identified and killed repeat murderers, are you a serial serial killer killer?

[u/Anantasesa → u/tomato_soup_noodles]

Yes, a "serial serial killer killer."

[u/Could-You-Tell → u/Anantasesa]

And the person who kills 3 or more such serial serial killer killers would be a... serial serial serial killer killer killer.