Both Uses

grievance
in
I Am Prepared to Die
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It put forward demands and resolutions; it sent delegations to the Government in the belief that African grievances could be settled through peaceful discussion and that Africans could advance gradually to full political rights.†
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grievances = complaints
X,' the suggestion is that Umkhonto was the inspiration of the Communist Party which sought by playing upon imaginary grievances to enroll the African people into an army which ostensibly was to fight for African freedom, but in reality was fighting for a communist state.†

Definitions:

(1) (grievance)
the cause of a complaint (real or imagined); or the complaint in formally written form
(2) (meaning too rare to warrant focus)
More rarely, in classic literature, grievance can reference a feeling of resentment.