Palliator

We never have been, are not, and never will be, directly or indirectly, the apologists or palliators of duelling.

Source: wiktionary

He was unquestionably the ablest debater that the British parliament ever produced, but his fame has not, like that of his great opponent, stood the test of time ; and the present generation, removed from the fascination of his fervid eloquence, can scarcely applaud the political penetration of the eulogist of the French Revolution, and the palliator of its atrocious excesses.

Source: wiktionary

The palliator of slavery assures the abolitionists that their benevolence is perfectly quixotic — that the negroes are happy and contented, and have no desire to change their lot.

Source: wiktionary

The only charm within the hated walls of my prison had ceased to exist ; the galling chain of slavery threatened to crush me — for the soother, the palliator, the dear, dear friend of my bosom no longer felt a participation in my sorrows.

Source: wiktionary