It was enacted in 1960 by our own government, not the Brits.
Excerpt from Wiki:
Preventive detention was first implemented in Malaya by the British in 1948 to combat the armed insurgency of the Malayan Communist Party during the Malayan Emergency. The Emergency Regulations Ordinance 1948 was enacted by the British High Commissioner Sir Edward Gent. It allowed the detention of persons for a period not exceeding one year. This ordinance targeted at acts of violence and only imposed temporary detention. The Malayan Emergency ended in 1960 and the ordinance was repealed. However, preventive detention was retained and remains a feature of Malaysian law today. In 1960, the government passed the Internal Security Act (ISA) under the authority granted by Article 149 of the Malaysian Constitution.
Read the rest here.
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Gerakan Mansuhkan ISA (GMI) are calling all Malaysians to step forward in solidarity for a nationwide vigil on 1st August 2010 to voice the call in abolishing this Act.
The following are some of the venues:
PENANG : at Speakers Square. For details, call Jing Cheng @ 012-7583779
PERAK : at Dataran Bandaraya Ipoh. For details, call Dr Kumar @ 019-5616807
KEDAH : at Dataran Zero KM, Sg Petani. For details, call Simon Ooi @ 012- 4202264
KELANTAN : at Taman Hijau, Jalan Sultanah Zainab (after Merdeka field ). For details, call Zaidi @ 012-3840415
Seremban : at Dataran Seremban. For details, call Veron @ 016-6687900
Sibu : No.25, Pusat Tanah Wang, Jalan Perdada, 96000 Sibu, Sarawak. For details, call George @ 019-8873535
Kuching : at Lots 468-469, Bangunan Al Idrus Commercial Centre, Jalan Satok, 93400 Kuching. For details, call See Chee How @ 019-8886509 or Zulkifli @ 013-8958174
SELANGOR: Dataran MBPJ (Padang Timur) near Amcorp Mall – 8pm.
If you don’t want the future generation to live in fear, summon your own courage NOW.