How does Martin Luther King compare Civil Rights to a transaction involving money?

Martin Luther King compares Civil Rights to a fair transaction in which one gets the fair rate for what they sell and purchase.

Explanation:

Martin Luther King prided the nation on its free market values that were also a reflection of its commitment to democracy and liberalism at least in principle.

It was from this only that he drew his influence of civil rights as a transaction with the government.

The government gives free and fair civil rights to the people and in return gets more productivity from the people in work and gets an equal society with less conflict.

Luther's vision was thus translated in this metaphor.