GJMM Movement for Gorkhaland

Gorkha Janmukti Morcha's movement for separate Gorkhaland is opposed by Cong(I), Trinmool Congress and CPI(M), all the three leading political parties of West Bengal. GJMM is asking for three hill sub-divisions of Darjeeling District, Siliguri City and northern portion of Dooars, where there is good population of Gorkhas. But in Siliguri, there are only 20% Gorkhas, rest are Bengalis. In same way, in North part of Dooars, gorkhas are less than 25%, rest are Adivasis, Kamtapuri & Bengalis. How Gorkhas can claim this territory in Gorkhaland