The widespread protests of June 5, 1963, known as 15th of Khordad Uprising, were held against the arrest of Ayatollah Ruhollah Khomeini after his strong remarks on Shah regime of Mohammad Reza Pahlavi, Israel and the United States. The protestor rallies were harshly suppressed by the Pahlavi regime force. The event however marked the vitality and power of revolutionaries against Pahlavi dynasty. However, the anti-religious and Western nature of the program was clear for religious figures including Ayatollah Khomeini. On June 5, 1963, the Iranian people staged massive demonstrations against Shah regime, following news of detention of the Father of Islamic Revolution, Imam Khomeini. The regime forces brutally suppressed them by martyring and wounding a large number of Iranian Muslims. In the revolution’s history, the historical uprising known as "15th of Khordad" marked the starting point of the Islamic movement which was to change Iran's destiny.