Answer:
civil disobedience.
Step-by-step explanation:
Civil disobedience is also known as passive resistance and its peaceful refusal of the people to bey the government laws or orders which they consider unjust. Started in India it has a global reach, where people represent their resentment to the discriminatory practices of government or any other authority in a peaceful manner. As per the question resentment of the African American to leave the park is the example of civil disobedience because he refuses to obey against the unjust demand of the municipality.