It is wrong to assume guilt by association.
Tim gets a call informing him that his son's group of friends have been arrested for vandalism.
Tim wants to discuss the situation with his son.
Tim talks to his son about choosing his friends more wisely.
Tim accuses his son of having some kind of involvement in the vandalism.
Tim's son starts to make better choices thanks to his dad's guidance.
Tim's son grows resentful of his dad's lack of faith in him.