Charlton Athletic and Millwall are to dedicate Saturday's south London derby at The Valley to the memories of Rob Knox and Jimmy Mizen.The boys were supporters of the respective clubs and were murdered in street violence incidents in 2008. [LNB]The two clubs aim to use the game to spread a hard-hitting message aimed at combating knife crime. [LNB]Sponsors' names on team shirts will be replaced with the Street Violence Ruins Lives campaign logo for the match. [LNB]Millwall manager Kenny Jacket said he was delighted to be involved with the campaign. [LNB]"It is an initiative that we back wholeheartedly," he said.[LNB] [LNB][LNB] "Football is a massive part of people's lives. In south London, Millwall and Charlton go back many generations and to integrate the two is a really good idea." [LNB]Charlton chief executive Steve Waggott said: "Street violence is a huge problem in our society. This game will really help raise the issue in the minds of football fans and the wider community." [LNB]Millwall striker Neil Harris told BBC London 94.9 how important the campaign was for him. [LNB]"I think this game is a fantastic opportunity for south London to send out a message between two rival clubs," he said.[LNB]Millwall's special shirt for the south London derby"Young kids look up to us as players and it is important that we send out the right message both on and off the pitch." [LNB]Mizen's parents, Barry and Margaret, said it was paramount that the clubs, the families and the fans came together on this special day. [LNB]"What a time to bring people together, near Christmas," said Margaret. "This time of the year is always difficult, but to know that we're all together is a really good thing." [LNB]It will be the first time in 13 years that the Lions, who trail Charlton by 13 points in the League One table, travel to The Valley.