If this can be determined a "hate" crime, it`s a federal offense. The FBI can work it. If it`s juveniles, the feds probably won`t prosecute, but local LE can. If there is other graffiti on the property that shows hate of a race or anti Semitism, etc., then it`s a hate crime. Most likely juveniles with a little knowledge of satanic worship. They recently nailed 3 kids for this in Acworth.