The leftist parties of Ceylon, who had in the past argued for parity between the Sinhala and Tamil languages, abandoned their beliefs in the late 1960s. They allied themselves with the communal Sri Lanka Freedom Party, who had made Sinhala the sole official language of Ceylon, and opposed the reasonable use of Tamil proposed by the Dudley-Chelvanayakam Pact signed by the United National Party Prime Minister Dudley Senanayake. The leftist parties adopted the racist slogan ""Dudleyge bade masala vadai"" - translation "there is masala vadai in Dudley's belly" (masala vadai is a Tamil delicacy). Sangaree, like many other Tamil leftists, became disillusioned with the leftist parties. Sangaree left the LSSP in 1966.