There are two different types of repression present in Freud's Introductory Lectures on Psycho-Analysis and Sophocles' Antigone, internal repression and external repression. Internal repression comes from internalizing social pressures and repressing one's id or it can come from repressing ones super ego. External repression is a result of some external, oppressive, source. Internal repression is social repression while external repression is political repression. External repression is much more dangerous often resulting in death.