Please do not sit on value judgment Section 154 Cr. PC does not stipulate presumption the part of police. Supreme Court has allowed the police to be reasonable which does not mean rejection of complaint outrightly without verifying the facts. Hold on verify facts if found false prime a facie deny FIR giving reasons on the basis of primary investgation. But act.
Show the proof of your caste identity. Lodge a written complaint with the police. Attach versions of witness (as) supporting your statement duly signed by him / them by affidavit in writing Try to establish the motive with direct and circumstantial evidence. Insist on receipt of your complaint duly signed by the duty officer.
Source: Official Website of NCSC Last Updated on 30 - 12 - 2016