Ahimsa magnifies one's own defects, and minimizes those of the opponent. It regards the mole in one's own eye as a beam and the beam in the opponent's eye as a mole.
We do not need to proselytise either by our speech or by our writing. We can only do so really with our lives. Let our lives be open books for all to study.
I call myself a Sanatani Eternal Hindu, because I believe in the Vedas, the Upanishads, the Puranas, and all that goes by the name of Hindu scripture, and therefore in avataras and rebirth.