Operation Lalang (also referred to as Ops Lalang) was carried out on October 27, 1987 by the Malaysian police to crack down on opposition leaders and social activists. The operation saw the infamous arrest of 106 persons under the Internal Security Act (ISA) and the revoking of the publishing licenses of two dailies, The Star and the Sin Chew Jit Poh and two weeklies, The Sunday Star and Watan.
The political developments which brought this second largest ISA swoop in Malaysian history since the May 13 , were sparked ostensibly by mounting political tensions having strong racial overtones. According to the White Paper explaining the arrests, various groups who had played up "sensitive issues" and thus created "racial tension" in the country had exploited the government's liberal and tolerant attitude. This racial tension made the arrests necessary and further, forced the government to act "swiftly and firmly" to contain the situation.
The sensitive issues were brought on by what appeared innocuously enough as Education Ministry appointments of some 100 senior assistants and principals to vernacular Chinese schools. This provoked a storm of protest when it was learnt that those appointed were Chinese whom were not Mandarin-educated.
Politicians from the Malaysian Chinese Association (MCA), the Democratic Action Party (DAP), GERAKAN and major Chinese-based parties joined the protests and on October 11, 1987, the Dong Jiao Zong (Chinese educationists) held a 2,000-strong gathering at the Hainanese Association Building, beside the Thian Hou Temple in , which evoked racially provocative speeches from the Chinese politicians present. The meeting resolved to call a three-day boycott in Chinese schools if the government did not settle the appointments issue. The boycott was called off later, albeit at the eleventh hour.
Daripada Abu Umarah iaitu al-Bara' bin 'Azib radhiallahu anhuma, katanya: "Kita semua diperintah oleh Rasulullah s.a.w. untuk melakukan tujuh perkara, iaitu meninjau orang sakit, mengikuti janazah, menentasymitkan orang yang bersin, menolong orang yang lemah, membantu orang yang teraniaya, meratakan salam dan melaksanakan sumpah."