Propaganda: the use of misinformation or disinformation on a mass scale to influence a population’s thoughts and opinions”

Well - first of all those definition is correct if you use words with their correct meaning. This is indeed better:

the spreading of ideas, information, or rumor for the purpose of helping or injuring an institution, a cause, or a person

There is a reason why those having power do not openly link you and all the people to their cookbooks. Manipulating people,dark psychology is indeed very powerful tool. Source of power - or ideas to stay against it.