Not me Teribus, my son.
As this happened long before the days when we had television in this house I have no idea of the numbers involved, it may be as you seem to suggest thousands were deployed at each incident although common sense tells us that the majority of these would be policemen with, if any, a few forces personel deployed to provide a bit of backbone.
Recent revelations about Hillsborough seem to indicate, that for whatever reason, fear, blackmail, shame or just shear stupidity secrets can take a long time to leak from uniformed and disciplined organizations.