Immorality-to-exploitation-to-oppression-to-liberation is cycle. In knowledge,abovesaid cycle takes place as two parts.

Immorality is social crime(weakness).
When immorals are there,their exploiters will rise to exist to oppress immorals.
When exploiters are there,their liberators will rise to exist.
So social liberators must include social exploiters for moral-legality like m k Gandhi did.