Another example is the prelude to the Ops Lallang in 1987 and the 1988 Malaysian constitutional crisis. In November 1986, MCA Selangor of which MCA's deputy president Lee Kim Sai was its head, passed a resolution in its annual convention to make it an offence to call any of the three major races immigrants or "pendatang". The resolution, which stated that Malaysia's three major races originated from other countries and that none of them should brand the others as immigrants and claim themselves to be natives. This was interpreted as challenging the bumiputra status of the Malays, and led to calls for Lee's sacking by members of UMNO. A compromise was eventually worked out whereby the term "pendatang" would not be used to describe any community and the bumiputera status of the Malays was not to be questioned. During this period, UMNO and pro-Chinese organisations frequently traded insults, with current Prime Minister, who was then UMNO Youth Chief Najib Razak. At a rally in 1987 in Kampung Baru in Kuala Lumpur, banners were hoisted carrying phrases such as "revoke the citizenship of those who oppose the Malay rulers", "May 13 has begun" (referring to the 13 May racial riots in 1969), and "soak it (the "keris") with Chinese blood". The tensions eased after Ops Lallang, when several political dissidents — most of them Chinese — were detained without trial under the Internal Security Act.