Untouchability and Hindu scriptures

Here we work on the premise that there is Dharma, and the
opposite of Dharma is aDharma, and the opposite of aDharma is
Dharma. And, we are, also, of the view that if some activity is
punishable then it is adharmic and the opposite of it is a dharmic
activity. Here we take the activity including its doer - there is no
activity in isolation. This means that any activity is not independent
of its doer. And lying to save this elites' Dharma is also not
punishable. It may become one's utmost duty to lie if it saves the
Varna Dharma. For an example lying is punishable but lying by a
Brahman is not. Therefore, it is necessary to look what is beyond the
Dharma given in the scriptures. Dharma can be found in the
activities which are opposed to aDharma. For example the entry of
Untouchable in temples is barred because it corrupts Dharma
therefore it is adharmic; then to prevent the entry of any
Untouchable in temples becomes the Dharma of any touchable
Hindu; so it is Dharma. Again the touch of an Untouchable corrupts
the Dharma of high caste Hindus therefore it is aDharma, and
opposite of it (not touching the Untouchable) is Dharma and thus
enforcing the untouchability is also Dharma. In short, the opposition
to aDharma is Dharma and enforcing such Dharma is also Dharma.
Therefore, though the untouchability is not mentioned in the Vedas,
it is still dharmic.