Activism, in a general sense, can be described as involvement in action to bring about change, be it social, political, environmental, or other change. This action is in support of or opposition to one side of a controversial argument.
There are many different forms of activism; a select list follows.
... de Veuster (Father Damien) (January 3, 1840 - April 15, 1888) was a Roman Catholic priest who dedicated his life to ministering to the sufferers of Hansen's ...