A new series of advertisements on Washington, DC buses calling for an end to US aid to Islamic countries have raised concerns of 'anti-Muslim' sentiment. Sponsored by the American Freedom Defense Initiative (AFDI), the nearly five-metre long ads feature a 1941 photo of Nazi Party leader Adolf Hitler with Haj Amin al-Husseini, a Palestinian community leader who later served as the Grand Mufti of Jerusalem. The advertisements are scheduled to appear on 20 city buses through June.