The protests in Bahrain started on 14 February, and were initially aimed at achieving greater political freedom and respect for human rights; they were not intended to directly threaten the monarchy. Lingering frustration among the Shiite majority with being ruled by the Sunni government was a major root cause, but the protests in Tunisia and Egypt are cited as the inspiration for the demonstrations. The protests were largely peaceful until a pre-dawn raid by police on 17 February to clear protestors from Pearl Roundabout in Manama, in which police killed four protesters. Following the raid, some protesters began to expand their aims to a call for the end of the monarchy. On 18 February army forces opened fire on protesters when they tried to reenter the roundabout, fatally wounding one. The following day protesters reoccupied Pearl Roundabout after the government ordered troops and police to withdraw. Subsequent days saw large demonstrations; on 21 February a pro-government Gathering of National Unity drew tens of thousands, whilst on 22 February the number of protestors at the Pearl Roundabout peaked at over 150,000 after more than 100,000 protesters marched there. On 14 March, Saudi-led GCC forces were requested by the government and entered the country, which the opposition called an "occupation".