Brown and his bud were walking down the street.
What should he have done? Blown the horn? Yell out the window?
He had something few ordinary folks do--a PA system and he used it to tell them to get out of the street (rather than wind down the window and just yell).
I just don't see where that translates into someone who is power mad.
YMMV
If you can’t recognize the intimidation factor in an amplified voice blaring at you, I am not sure what I can say to you. There is really no way to sound reasonable and professional with your voice blaring through a PA. That interaction started from a “I have the power and you will dammed well OBEY IT PEON!” basis and went downhill from there. And you also seem to have ignored my original point of Brown being an idiot—which he was.