Truth mitigates falsehood because it opens eyes. Falsehood rules because it is comfortable and conforms to the reinforcement of institutions that need to perpetuate falsehood to survive. Who has a monopoly on Truth? Many people still believe mainstream news or "official reports" are Truth, but these agencies routinely have to reinforce their stories, histories and assertions, in order to attain the status and retain power.
Thomas Jefferson, Mahatma Gahdhi and even people still alive today, such as Ron Paul, often cited truths that got them in trouble, people painted them "crazy" and were superseded by politicians and leaders who favored authoritarianism and institutions of "truths" by force.
Truth needs no propaganda, advertising or any defence whatsoever. It is self-evident and always mitigates falsehood, when people stop listening to "truths by force".