Being a police officer, I can tell you that the police laughed at your report, if in fact one was made. Calling someone names on the internet on a public board is in no way illegal. If it were, the courts would be so tied up with lawsuits and hearings that every building in America would have to be converted to a court. Unless said offenders posted pictures of underage children or posed serious threat to anyone's well-being, which calling them names is not, then the police will not look into your little issue.
Please in the future, leave the cops alone unless you have a real issue. We have enough idiots to deal with on a daily basis.