Every Hebrew leader who ever existed encouraged this.
Cleisthens encouraged people to participate in government.
The leader was Pericles.
Sparta
moses is an important hebrew leader bacause god sent him to free the slaves (his people)
Cleisthenes in Athens.
Cleisthens
Malcom X was probably the most prominent black leader of the time, who preached hatred and encouraged black people to distance themselves from whites.
Marcus Garvey encouraged his followers to go back to Africa and "redeem" it for their people.
Both Moses and then Joshua were the leaders of the Hebrew people.
Massasoit was a leader of the Wampanoag people in the early 1600s who encouraged friendship with English settlers.
They believe that they are the chosen people of God.
Your question is too unspecific to answer properly, but I would guess Socrates.