Barisan Sosialis

Barisan Sosialis (BS), also known as the Socialist Front, is a defunct left-wing political party in Singapore. It was formed on 29 July 1961 and was officially registered on 13 August 1961 by the leftist faction of the People's Action Party (PAP) who had been expelled under the leadership of Lee Kuan Yew. The prominent founding members of BS were Lee Siew Choh and Lim Chin Siong. It was one of the biggest opposition parties in Singapore during the 1960s. The main objectives of BS, in its own words, were "eradicating colonialism", establishing a "united independent and democratic Malayan nation" comprising the Federation of Malaya and Singapore and "introducing an economic system to promote prosperity and stability in society."

As the PAP consolidated its power during the 1960s, the PAP-led government cracked down on BS, accusing it of pro-communist activities as part of the geopolitical climate of the Cold War. In 1963, as part of Operation Coldstore, over 100 opposition leaders, including Lim Chin Siong, were arrested under preventative and indefinite detention known as the Internal Security Act (ISA), with support of the British and Malaysian governments. The arrests severely weakened BS, with boycotts by BS MPs to Parliament leading to more arrests throughout 1966 and 1967, most notably Chia Thye Poh. BS would fully boycott the 1968 elections, cementing PAP's political dominance. These crackdowns were justified by the government as a security measure to prevent a communist revolution; Chia himself declared that the means of the struggle would be "street demonstrations, protests and strikes". However, the political crackdowns were also criticised as political suppression, as the BS members did not publicly agitate for communism or subversion. Although BS would contest in subsequent elections, it never recovered from its heyday and most of its members eventually joined the Worker's Party (WP) in 1988, and the party has become dormant ever since.