militant
mil-i-tant
adjective
Favouring aggressive, confrontational methods to achieve a political or social objective.
"The union adopted a militant stance."
noun
A person who uses aggressive, confrontational methods to support a political or social cause.
"Several militants were arrested after the demonstration."
Thesaurus
Synonyms: activist, unpeaceful, warlike, hawkish, war-ridden, warring, belligerent, competitive, aggressive