It is wrong to call the police on a friend.
Bryan and Marco are friends at Bryan's house and Marco just downloaded an illegal file from Bryan's internet.
Bryan wants his friend Marco to know that downloading illegal files is wrong.
Bryan asks Marco not to download from his computer because he doesn't want to get in trouble.
Bryan picks up the phone and calls the cops and tells them that Marco downloaded illegally.
Marco is grateful and stops downloading and they remain friends.
The cops reprimand Marco and Marco ends his friendship with Bryan.