activism       
noun [ U ]  politics usuk/ˈæk.tɪ.vɪ.zəm/
 (通常指为达到政治或社会目的而采取各种手段的)激进主义,行动主义
the use of direct and noticeable action to achieve a result, usually a political or social one
  black/student activism 黑人/学生运动激进主义 
 The levels of political activism in this country have greatly declined. 该国工会和政治激进主义的活动势头已大大减弱。 
 - More examples
 - Human rights activists have accused the country's government of a systematic perpetration of violence against minority groups.
 - Local activist groups have become increasingly vociferous as the volume of traffic passing through the village has grown.
 - a martyred civil rights activist
 - a green activist