Why did the Ayatollah Khomeini hate the US?

Because of U.S. support the Shah, was the heart of his foreign policy. They took more 60 hostages and demanded American force the shah to face trial.
Because the US support the Shah, was the heart of his foreign policy, hey took 60 people for hostage
because US has anti Islamic policies especially anti shiite Islam. also for supporting Israel. he called US Great Satan because policies of US is same as policies of Satan.