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.
... between three qualitatively different cases:
If the discriminant is zero, then there is a repeated solution x, and this solution is real. (Geometrically, this means ...