England - London police on Wednesday released pictures of 66 people they are chasing in connection with the mass violence surrounding West Ham's clash with fierce rivals Millwall.
Supporters fought running battles in the east London streets, one man there with his family was knifed in the chest, while the August 25 League Cup second round match at Upton Park was interrupted by three pitch invasions.
Politicians have said the scenes, which recalled the dark days of English football hooliganism, were a disgrace, while organisers of England's bid to host the 2018 World Cup also condemned the violence.
Some of the 66 pictures are to appear on BBC television's top crime show.
"The level of disorder witnessed that night was absolutely unacceptable and not at all in the spirit of what football matches are all about," said Detective Chief Inspector Richard Tucker.
"We are not talking about minor offences here but a hardcore of individuals who were intent on causing violence and destruction.
"The majority of fans, like police, will not stand for this type of mindless behaviour at matches.
"Those who played a part in the events of that night should know we are making every effort to arrest them and hold them accountable for their actions."
Officers have been trawling through security camera footage.
So far, 41 people have been arrested, of which 29 have been charged, 10 are on bail and two have been released with no further action.
Besides the violence, West Ham striker Carlton Cole and Millwall's Jason Price both suffered racist abuse during the match.
West Ham won 3-1 after extra time in the first game between the London clubs for four years. The Hammers are in the top-tier Premier League while Millwall are in League One, the third tier.
The Football Association, England's national governing body for the sport, issued four charges against West Ham and three against Millwall.