So you intervene and one of the clowns claims you hurt them, now you're in court. Security comes, sees you tussling with the jackass, now you're bounced also possibly with charges. This charges make the paper and possibly endanger your job. You intervene and the jackass kills you instead. No thanks. I'm not intervening in squat. Call security? Absolutely, but unless it's someone Im directly related to no chance I'm intervening.