Per google search ".. etymology"
demos: the people; -cratia: power, rule; Greek.
res: entity, concern; publicus: of the people, public; Latin
"Rule of the People" and "Concern of the People" sound SIMILAR, sure!
Just because a mechanic is concerned for your car, does not mean he owns it... I think it's lazy of you to call this dichotomy "propoganda" without offering any definitions or etymology.