Complex sentence: In December 1916, the association published "The Non Brahmin Manifesto", affirmed its loyalty and faith in the British Raj, but decried Brahminic bureaucratic dominance and urged for non-Brahmins to "press their claims as against the virtual domination of the Brahmin Caste".
Split into simpler sentences: In December 1916, the association published "The Non Brahmin Manifesto". The manifesto while affirming its loyalty and faith in the British Raj, decried the dominance of Brahmins in the government bureaucracy and urged for the non-Brahmins to "press their claims as against the virtual domination of the Brahmin Caste".