In 1963 or ‘64 the Washington DC High School Football Championship was played in DC Stadium between the Catholic school champs and public school champs.
You can guess at the racial distribution of the student fans.
A riot ensued. Two police GSD’s suffered from human bites. That was the last time I recall PD dog deployment.
They have Malinois, now.
Nastier dogs.
By far.
I once saw rival 1%ers *instantly* turn polite when *1* Mal jumped from the cruiser window onto its hood.
FWIW, the sheer psychological factor of turning Dobes loose would end a lot of this crap.