Carnage broke out in Glasgow's east end ahead of the Old Firm derby on Wednesday.
Celtic beat Rangers 3-0 at Parkhead but police were called into action before the match took place and footage shows droves of revellers fighting on Duke Street.
Just prior to 7pm, a mass brawl erupted outside the The Alexandra pub and spilled down to The Crown Creighton.
In a clip obtained by the Daily Record, sirens and screaming could be heard as police officers scrambled out of their vans and pulled apart scuffles.
Cars were forced to stop on the main road which runs right through the east end of the city.
As for the match itself, it was Celtic's fans who went home happy thanks to Reo Hatate's double and a strike from Liel Abada that put them 3-0 up before half-time.
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Ange Postecoglou's side went top of the Scottish Premiership table with the win, now one point above champions Rangers with a superior goal difference.
The Bhoys' night got off to a flying start after just five minutes, when Hatate picked up a loose ball and fired past Allan McGregor.
Celtic continued their dominance throughout the first half but had to wait until the 42nd minute to double their lead, with Japanese midfielder combining with Abada and unleashing a strike that again found the bottom right-hand corner.
And the delighted Parkhead home crowd only had to wait another two minutes before the third, this time Abada getting himself on the scoresheet after catching Rangers left-back Borna Barisic napping.
Gers boss Giovanni van Bronckhorst made three substitutions at half-time, including hooking Manchester United loanee Amad Diallo.
But Van Bronckhorst's side were well beaten, with former Liverpool winger Ryan Kent doing his best to spark a comeback.
Rangers midfielder Ryan Jack did hit the crossbar with a long-range effort in the 79th minute, although it was too little, too late for the visitors, who drop to second place.
Former Celtic goalkeeper Pat Bonner told BBC Sportsround: "You've got to give all the credit to Ange Postecoglou for the players he has brought in here.
"Probably 80% of the team out there has been signed by him. That's what he was hired to do, and he's done it exceptionally."
Meanwhile, ex-Rangers striker Kenny Miller added: "Off the back of the two draws, this is going to be very damaging.
"Rangers are playing catch-up now. It's a different mentality. You have to beat Ross County away, not concede three goals.
"And they were outplayed at Pittodrie. Rangers have to find answers and find them quickly."
New signing Aaron Ramsey was not involved in Wednesday's clash, having signed on loan from Juventus on deadline day, nor was right-back Mateusz Zukowski after his move from Lechia Gdansk.
