To dream of a clown represents an aspect of your personality makes other people laugh. In a positive context clowns may reflect practical joking or childish fun. Acting silly. In a negative context clowns symbolize issues in your life that embarrass you. Incompetence that is humiliating, inadequacy that is embarrassing, feeling that you or someone else looks foolish.
To dream of an evil clown represents a fear of embarrassment, or that people will laugh at you.
To dream of being raped by a clown symbolizes your sense of powerlessness to stop feeling embarrassed. Feeling that humiliation is being forced on you while you fail to escape it.
Example: A man dreamed of seeing ape-headed clowns. In waking life he had embarrassed himself showing off to other people taking dangerous amounts of drugs.
Example 2: A man dreamed of seeing Hitler dressed as clown. In waking life he was a citizen living in Germany while Hitler was dictator. He felt that the Hitler was an idiot who was embarrassing his nation.
Example 3: A man dreamed of running away from a clown. In waking life he was desperate to avoid allowing his illness to cause humiliating hairloss by wearing a hood.
Example 4: A woman dreamed of a clown. In waking life she had an abortion and noticed that her husband was embarrassed to discuss the abortion with friends or family.