Social Activist

Activism consists of efforts to promote, impede, or direct social, political, economic, and/or environmental reform or stasis with the desire to make improvements in society. Forms of activism range from writing letters to newspapers or to politicians, political campaigning, economic activism such as boycotts or preferentially patronizing businesses, rallies, street marches, strikes, sit-ins, and hunger strikes.

One can also express activism through different forms of art (Artivism). Daily acts of protest such as not buying clothes from a certain clothing company because they exploit workers is another form of activism. One view holds that acknowledging privileges and oppressions on a daily basis ranks as a form of activism. Research has begun to explore how activist groups use social media to facilitate civic engagement and collective action.

The Online Etymology Dictionary records the English words "activism" and "activist" (in the political sense) from 1920 and from 1915 respectively.

Activists can function in roles as public officials, as in judicial activism. Arthur Schlesinger, Jr., introduced the term "judicial activism" in a January 1946 Fortune magazine article titled "The Supreme Court: 1947". Activists are also public watchdogs and whistle blowers, attempting to understand all the actions of every form of government that acts in the name of the people: all government must be accountable to oversight and transparency. Activism is an engaged citizenry.

...
Wikipedia