That video reminds me of a Scotland v. England game at Hampden (the one where Gough scored) and we were walking back to the car. The England 'fans' were supposed to be 'kept in' by the Polis....but managed to charge down the hill towards us. "Us" included everyone; children, dads, mums, granadads, etc. The England 'fans' were all mostly fat burly 20-something thugs....so we ran...
..then almost by magic 'we' all thought "wait a f***ing minute" and stopped. And turned. And decided 'we' should go back....I reckon a few thugs found out that day that collective response beats wanton thuggery

I also think it was about this time that the "Tartan Army" was founded...on the basis of being 'friendly'.