Chelsea supporters took to defacing the statue of Arsenal legend Herbert Chapman after their goalless draw with the Gunners on Sunday.
The video, as seen on The Mirror, shows Blues fans sticking signs on the immortalised Chapman's face, while other fans took videos of the incident.
This was not the first time Chelsea supporters ran amok outside the Emirates Stadium.
Another group of Chelsea fans, labelled the C-Team, hijacked the concrete Arsenal sign at the end of the Clock End bridge with their own Chelsea sign last week.
The C-Team claimed their mission was: "To bring a touch of class to the war-torn area known only as the Emirates."
Following The Blues' negative performance and chants of 'Boring, boring Chelsea', maybe it's Chelsea who need to hire the C-Team for a touch of class?
Arsenal Legend Herbert Chapman won two league titles and an FA Cup with Arsenal. The manager is most fondly remembered for his saying he was going to make Arsenal the greatest club in the world.
Chapman architected various building projects at Highbury, including the construction of The Clock End and even changed the name of the local underground station, from Gillespie Road to Arsenal.
The Yorkshire man said on the change: "Whoever heard of Gillespie Road? It's Arsenal around here."
Chapman has two statues at the ground; one at the end of the Clock End bridge and the other in the entrance to the Directors Box.
Current boss, Arsene Wenger, is the only other manager to have a statue immortalising himself at the Emirates Stadium.