ISLAMABAD--Pakistan blocked YouTube and many other Internet sites Thursday in a widening crackdown on online content deemed offensive to Islam, reflecting the secular government's sensitivities to an issue that has ignited protests in the Muslim country. The move came a day after the government obeyed a court order to block Facebook over a page called "Everybody Draw Mohammed Day!" that encourages users to post images of Islam's Prophet Mohamed. Most Muslims regard depictions of the Prophet, even favourable ones, as blasphemous. Supporters of an Islamist political party protested against Facebook in at least three cities in small and peaceful rallies. The government, which is unpopular among many Islamists for siding with the United States in the war against the Taliban and al-Qaida, is hoping that the website bans will lessen anger in the days ahead.