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.
... morality.
The novel intially appeared serially in the periodical Ruskii Vestnik ("Russian Messenger"), but Tolstoy clashed with the editor, Mikhail Katkov, over issues ...