David Koch warns Port Adelaide fans to monitor their language at the footy David Koch has told Port Adelaide fans to mind their language. PORT Adelaide president David Koch is appealing to Power fans to monitor their language at AAMI Stadium after an official complaint of crowd behaviour at the weekend. This follows Koch recently protesting an AFL website feed labelling Port supporters as "feral." A long-time, female Crows member who has joined the Power membership this season has taken offence at an unidentified Port fan who verbally abused Richmond and former Adelaide half-forward Chris Knights after he fell to ground after kicking a goal in the second term of Port's loss. He was later carried off with a serious knee injury. She took issue with two remarks made from the terraces. A full-day investigation by Port staff has determined the remarks were not made by a Power member but a fan who bought a match-day ticket to sit in bay 117. This has made it impossible for Port to identify the accused fan. However, the club says in a statement: "The club asks that the spectator or anyone who can assist in identifying this person come forward and make contact with the club. The club encourages good-natured banter amongst supporters and passionate support for Port Adelaide, but will not tolerate anti-social and abusive behaviour towards opposition players and supporters. Attending a Port Adelaide game should be a fun, family-friendly experience for all supporters. The Port Adelaide Football Club endorses the AFL's stance on vilification and expects all supporters not to abuse the opposition, opposition supporters and umpires on the grounds of race, religion, gender and sexuality. The club is in the process of consulting supporter groups to construct a policy that reflects and upholds these values.