In September 1932, a faction of the Magyar Party created a dissident movement around the weekly Cluj publication Falvak Népe ("Lumea satelor" or "The World of the Villages").
In June 1933, this movement coalesced into the Magyar Opposition (Opoziţia Maghiară), whose leadership included members of the Romanian Communist Party (PCR).
The party programme called for defending the peasantry from higher taxes, an end to abuses against grape-growers and loggers, a joint struggle with ethnic Romanian workers for the granting of specific demands, and respect for democratic rights and freedoms.
From April to November 1934, its official publication was Székelyföldi Néplap ("Gazeta populară din Ținutul Secuiesc" or "Popular Gazette of Székely Land").
On October 16, 1944, the Braşov Conference decided to transform MADOSZ into the Hungarian People's Union, which recognised the leading role of the PCR.