Someone Who Speaks Out on Behalf of a Cause

This page is the CodyCross answer for the clue below from Medieval Times, Group 230, Puzzle 3 (Battle of Tours).

Question is: Someone Who Speaks Out on Behalf of a Cause

and the answer is: PROTESTER

Word Meaning:

PROTESTER — One who protests, either alone or in a public display of group feeling.

Definitions from Wiktionary.