The class of people exerting power or authority(noun)
WordNet. Princeton University. 2010.
Use "ruling class" in a sentence
"Entrenched a ruling class which is distinguished by neither talent, culture, nor wit; kept alive for one more generation the distinctions of a dead age. '"
"The ruling class that had giventone to its society had practically disappeared; and the others, entirely unaccustomed to lead, were existing in a state of apparent bewilderment."
"She felt almost upper class; and at the same time a resentment against the ruling class smouldered in her."