What did the Salt march draw attetion to?

Direct action campaign of tax resistance and nonviolent protest against the British salt monopoly.

The Salt March drew attention to the unjust taxes and monopoly of the British in the trade of salt.

Explanation:

The Dandi March, also known as the Salt March was carried out by M. K. Gandhi and his followers in order to protest against the unreasonable and unlawful taxes implied by the then British Government on salt in India. Gandhi proposed that it is utterly cruel to levy tax on a commodity like salt that is used by common people on an everyday basis.