A research on Cults: Part 2 (Jevovah's Witness)

Freedom of religion in Singapore

The Constitution provides for freedom of religion; however, the Government restricted this right in some circumstances. The Government has banned the Jehovah's Witnesses and the Unification Church. The Government does not tolerate speech or actions that it deems could adversely affect racial or religious harmony. There were no reports of societal abuses or discrimination based on religious belief or practice.

Legal and policy framework
The Constitution provides for freedom of religion; however, the Government restricted this right in some circumstances. The Constitution provides that every citizen or person in the country has a constitutional right to profess, practice, or propagate his or her religious belief so long as such activities do not breach any other laws relating to public order, public health, or morality. There is no state religion.
All religious groups are subject to government scrutiny and must be registered legally under the Societies Act. The Government deregistered the country's congregation of Jehovah's Witnesses in 1972 and the Unification Church in 1982, making them unlawful societies. Such a designation makes it impossible to maintain a legal identity as a religious group, with consequences relating to owning property, conducting financial transactions, or holding public meetings.

http://en.wikipedia.org/wiki/Freedom_of_religion_in_Singapore

Separateness
Jehovah's Witnesses believe that the Bible condemns the mixing of religions, on the basis that there can only be one truth from God, and therefore reject interfaith and ecumenical movements.[231][232][233] They believe that only their religion represents true Christianity, and that all other religions fail to meet all the requirements set by God and will be destroyed.[234] Jehovah’s Witnesses are taught that it is vital to remain "separate from the world." Watch Tower publications define the "world" as "the mass of mankind apart from Jehovah’s approved servants" and teach that it is ruled by Satan and a place of danger and moral contamination.[235][236][237] Because of perceived dangers from "worldly" association,[238] Witnesses are advised to minimize social contact with non-members to better maintain their own standards of morality.[239][240][241][242][243][244]
Jehovah's Witnesses believe their highest allegiance belongs to God's kingdom, which is viewed as an actual government in heaven, with Christ as king. They remain politically neutral, do not seek public office and are discouraged from voting, though individual members may participate in uncontroversial community improvement issues.[245][246][247][248] They abstain from celebrating religious holidays and birthdays and reject many customs they believe have pagan origins. They do not work in industries associated with the military, do not serve in the armed services[249] and refuse national military service, which in some countries may result in their arrest and imprisonment.[250] They do not salute or pledge allegiance to flags or sing national anthems or patriotic songs.[251]

http://en.wikipedia.org/wiki/Jehovah's_Witnesses

Not only has the name of this cult been changed time and again, but they also change their doctrines regularly -- between 1917 and 1928, they changed their doctrines 148 times! (Prior to 1931, Jehovah's Witnesses had also gone by the names of Millennial Dawn, People's Pulpit Association, The Brooklyn Tabernacle, and the International Bible Students Association.) Russell died in 1916 and was replaced by the second president, Joseph F. Rutherford. "A process of replacing Russell's writings with Rutherford's began in 1921 with the publication of Rutherford's Harp of God. Between 1921 and 1941, Rutherford was to write twenty books and numerous pamphlets, which would slowly revise the doctrine and structure left him by Russell" (Encyclopedia of American Religions, G. Melton, Vol. 1, p. 485). One of Rutherford's books that caused a great amount of controversy was the seventh volume of the Studies in the Scriptures.

http://www.rapidnet.com/~jbeard/bdm/Cults/jw.htm

And they are still very much active in Singapore.
If you see caucasian men in the MRT with white shirts and black pants. With a black badge and white wordings. They like to approach people on the trains. They are part of the International Bible Students Association