I tested Liberty Civil Defense 9mm ammo against Spartan Armor System threat level IIIA body armor to see what happens. I've always known that speed defeats body armor regardless of the bullet type or materials used in its construction, but does that apply to the Civil Defense ammo?
This video isn't telling the ATF or NIJ anything they don't already know. Test results were previously forwarded to the FBI, ATF and NIJ by other parties (not me) in 2013.
Dana Safety Supply post: http://truenewsusa.blogspot.com/2013/05/law-enforcement-safety-alert-liberty.html
PoliceOne article on the bullets penetrating armor (must be LEO to read): https://www.policeone.com/preview/columnists/Doug-Wyllie/tips/6247315-Cover-concealment-and-cop-killer-cartridges