Vincent Cheng Kim Chuan
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In 1987, Cheng was one of the 22 Singaporeans branded as a "Marxist conspirator" and arrested under Operation Spectrum. He was the last detainee to be released.
Cheng has also recounted on his experiences in the blog Singaporerebel. The NGO Singaporeans For Democracy (SFD) wrote an official letter of inquiry to the Internal Security Department over the issue.