We argue that dark matter can automatically arise from a gauge theory that possesses a non-minimal left-right gauge symmetry, SU(3)_C \otimes SU(M)_L \otimes SU(N)_R \otimes U(1)_X, for (M,N) = (2,3), (3,2), (3,3), \cdots, and (5,5).
@article{arxiv.1610.02642,
title = {Left-right model for dark matter},
author = {P. V. Dong and D. T. Huong},
journal= {arXiv preprint arXiv:1610.02642},
year = {2018}
}