What is an example of metaphor in the novel, The Witching Hour?

“Look at John Carpenter’s The Thing , with its screaming fetal heads! And what about the old classic Rosemary’s Baby, for God’s sake, and that silly movie It’s Alive, about the monster baby who murdered the milk man when it got hungry. The image was inescapable. Babies—fetuses. He saw it everywhere he turned.”

Michael uses horror films as a metaphor for abortion.