An "Opposition Movement" refers to a group or coalition that actively challenges the policies, actions, or authority of a governing body or political regime. These movements often arise in response to perceived injustices, corruption, or lack of representation, and they can take various forms, including protests, political campaigns, or grassroots organizing. Opposition movements can be found in many countries and may involve diverse participants, including political parties, civil society organizations, and ordinary citizens. Notable examples include the Solidarity Movement in Poland and the Arab Spring protests across the Middle East and North Africa.