What does an activist do?

Answer 1

Promote a cause, and seek change to support that cause.

For example, those who sought to get women the right to vote were activists. So where those who sought (and failed) to ban same-sex marrige via a federal constitutional amendment.

Answer 2

Activate of course.

You know, like the Power Rangers.

Answer 3

depends the crazy ones (that's most of them) bomb places or cause public problems like blocking traffic breaking windows and dragging there dead sons name through the mud