It is wrong to conceal the evidence of a crime.
John sees his friend Rick steal a homeless man's wallet on the way to school.
John wants to stay friends with Rick.
John writes an anonymous note to an authority about what he witnessed, but doesn't tell Rick about it.
John offers to burn the wallet for Rick if he splits the contents of it with him.
Rick gets in trouble for his theft, but stays friends with John.
John and Rick are caught by a teacher destroying the wallet and are questioned by the school officer.