Let me get serious for a minute.
I remember being told, nearly 30 years ago, that if you see cops or hear sirens, you pretend it's the pause sound from Super Mario Bros and you stop what you're doing and stand still.
Because if you're arguing, fighting, or bracing like you're about to fight, the police are not about to play referee and break up the fight or argument they are likely to shoot into it, especially if the cops are white.
I've literally seen niggas who look like WWE superstars, throwing stiff ass punches, come to a complete stop and dap each other off and pretend to be friends when the police came just to not risk getting arrested or worse.