The Qu'uran doesn't say Jesus is coming back. It has great respect for Jesus and discusses his life and teachings a great deal. But in Islam, Jesus isn't the messiah. He is a great prophet, but they consider Muhammed the final prophet. Islam has no messiah. Just Allah and the Prophets.
Muslims are not victims of mistreatment, even thought they would have you believe so. The Koran says there are two houses. One house is the house of Dar al-Islam, or House of Islam. The other house is Dar al-Harb, or House of War. You belong to one or the other. All unbelievers belong to the House of War. Islam is required to go to war with Non believers. They are in a Holy War to forcefully have everyone worship Allah. That is way they so try to destroy America and Israel. Without those two countries, they can possibly go to war around the world and force Islam among the people.