Diplomacy is the exercise of freedom of speech at the international level. Domestically, freedom of speech is one of the civil rights which prevent authoritarian rules. As a means, diplomacy may serve to champion the basic liberties globally. For this idea, the trajectory of racism is enlightening.
For centuries, millions of people lived under a regime of domination which deprived them of the civil life based on racial supremacy. Great Britain has once profited from the slaves’ market. However, for internal motives, abolition of slavery started featuring as a condition to establish international treaties with the British. This happened to Brazil in its bilateral relation with Britain, in the 19th century.
Eventually, slavery was abolished and prohibited by the International Law. Although, legally, African descendants and white people were equal, slavery left a racist legacy. The racial segregation in the United States of America is an example. Rules segregating not only schools and restaurants, but also buses and bathrooms would linger, had not been for the national and international protests for the civil rights of black people.
Few years later, in the last decades of the 20th century, the world witnessed the fall of another racial segregation system, now in South Africa, the Apartheid. The international community, represented by the United Nations, played a great part in pressuring the South African government until regime change. Since then, Apartheid has been also namely addressed by the International Law.
The origin of diplomacy is the will to maintain peaceful dialogue between nations. Civil liberties engender peace. Therefore, the role of diplomacy implicates their promotion throughout the world. Each of the events above demonstrates diplomacy in action.