During the 1991 Gulf War, hostility toward Arabs increased in the United States. Arab Americans have experienced a backlash as result of terrorist attacks, including events where Arabs were not involved, like the Oklahoma City bombing, and the explosion of TWA Flight 800. According to a report prepared by the Arab American Institute, three days after the Oklahoma City bombing "more than 200 serious hate crimes were committed against Arab Americans and American Muslims. The same was true in the days following September 11."