n. (c.)可數名詞抗議者The protestors gathered in the town square to voice their concerns.
n. (c.)可數名詞社運人士She is a dedicated protestor against environmental pollution.
n. (c.)可數名詞異議人士He was known as a protestor against the government's policies.
n. (c.)可數名詞參與抗議者Every protestor has their own reasons for participating in the demonstration.