picketer

例句：

1. 1. The picketers were peacefully demonstrating against the company's new policy.
   抗议者们在和平地反对公司的新政策。
2. 2. The protesters marched through the streets to demand better working conditions for their employees.
   抗议者游行穿过街道，要求改善员工的工作条件。
3. 3. The police had to intervene when a picketer got into a physical altercation with a security guard.
   当一名抗议者与一名保安发生肢体冲突时，警方不得不介入。