My land is usarp(hadapna)

Is ground par ki yeh jamin Harijan ka hai--  aap Scheduled Castes and Sceduled Tribes ( Prevention of Atrocities) Act, 1989 ki dhara,i.e., Section 3(1) ( V ), and 155  ke antragat bahhoot kooch kar sakte hain.

Phir aapke liye Sceduled Caste and Sceduled Tribe ( Prevention of Atrocities) Rules, 1995 bhi kargar hoga jiske anushar special Police officer ki niyukti hoti hai aise atyacharo ka anushandhan kar ushe rokne ke liye.

Act 1989 Section 3 (1) (V) reads: Whoever not being a member of a Sceduled Caste or Sceduled Tribe ....Wrongfully dispossesses a member of a Sceduled Caste or Sceduled Tribe from his land or premises or interferes with the enjoyment of his rights over any land, premises or water ... shall be punishable with imprisonment for a term which shall not be less than six months but which may extend to five years and with fine.

Section 155 supposes positive and defacto possession of the land as unless  a man is shown to be in actual physical possession of the property, he cannot be dispossessed.

You have all these ingredients so best of luck.