His efforts were supported by former Prime Minister Edouard Daladier, Minister Albert Sarraut, Emile Kahn, head of the Ligue des Droits de l'Homme - they voiced protest against persecution of Caodaists by the colonial authorities. Thus since its early years Caodaist movement was keen to get itself global. There were moves to attend the international Conferences of World Religions, notably in mid-1930s and till 1950s. Gabriel Gobron, the official representative of the movement in Europe, attended World Spiritualist Congress in Barcelona in 1934 on behalf of the Caodaists. The Communist take-over in 1975 led to a mass exodus from Southern Vietnam.
Analysts agree that few countries treat their religious congregations as badly as Vietnam.
The violations of freedom of religion include the requirement that all religious activity be approved by the state and restrictions on travel by religious leaders and the contents of their sermons and speeches. The earlier repressive phase has been replaced by a more liberal recognition of the fact, that the religions can not be so easily annihilated. But it is too early to depict the changes as an acceptable modus vivendi, which has been arrived at between the Communist Party and the movements. Though the religions are already experiencing something of a revival in recent years as heavy restrictions have been eased, but it will be years before they regain their former vibrancy. Years of suppression are readily apparent, especially in the largely geriatric religious hierarchy.