抗议者们与警察发生了冲突。

The ___protesters clashed with the police.

抗议者们举着标语在街道上游行，呼吁改善工作条件。

The ___protesters marched down the street with signs, demanding better working conditions.

环保抗议者在市政府前集会，要求采取更多措施应对气候变化。

Environmental ___protesters gathered in front of the city hall, demanding more action on climate change.