Nonviolence means an ocean of compassion. It means shedding from us every trace of ill will for others. It does not mean abjectness or timidity, or fleeing in fear. It means, on the contrary, firmness of mind and courage, a resolute spirit.
There are times when you have to obey a call which is the highest of all, i.e. the voice of conscience even though such obedience may cost many a bitter tear, and even more, separation from friends, from family, from the state, to which you may belong, from all that you have held as dear as life itself. For this obedience is the law of our being.
If untouchability lives, Hinduism perishes and even India perishes, but if untouchability is eradicated from the Hindu heart, root and branch, then Hinduism has a definite message for the world.