campaigner - a person who takes part in organized activities which are intended to change something in society - ผู้ต่อสู้,ผู้รณรงค์,ผู้โฆษณาเผยแพร่

campaigner - someone who tries to achieve political or social change by persuading other people or the government to do something - ผู้ต่อสู้,ผู้รณรงค์,ผู้โฆษณาเผยแพร่