She had her ears 'pierced'. = She 'pierced' her ears. [=she had holes made in her ears so that she could wear earrings]
The fog was 'pierced' by a dim light. [=a dim light could be seen through the fog]
The troops 'pierced through' the enemy's defenses.
(..) ...people like a wolf among sheep. I kill where... ...I wish, when... ...I Wish. My armor is iron. No blade can pierce me. All right. A Black Arrow? Why did you never tell me'? Because you did not need to know. Listen to me carefully. I need you to distract the guards. (..)2013 The Hobbit: The Desolation of Smaug