These revolts began because the Cambodian people felt that they were not being treated in the same sense as the French motto in the revolution; "liberty and equality".
Sihanouk tried to maintain neutrality for Cambodia by alternating his support between North Vietnam and the USA, however, this did not prevent the war from spilling over into Cambodia.
He does this to enforce democracy in Cambodia. He starts his own political party called Popular Socialist Community.
He was deeply distrusted by Sihanouk, and was seen as a threat to his power.
Sihanouk is overthrown the first of 3 times while visiting France, Cambodians supported the coup because they thought Cambodia's government as unstable