A racial slur has been found spray painted in Ridgefield.  Police are investigating the incident at the turf field at the Tiger Hollow Complex at Ridgefield High School, which happened after a pick-up game Wednesday night.   Principal Jake Greenwood told the school community that he has pressed charges on the party involved.  Greenwood says the incident was not perpetrated by a member of the Ridgefield community or a student in any of their schools.  The suspect was identified after a review of camera footage.  Students using the field at the time the incident were not directly associated with an in-season Ridgefield High School sports team.  The painted word was removed prior to the start of school yesterday.  In an email to families, Greenwood provided resources about how to talk to children about bias, prejudice and racism.