ANGER.
"Anger" is the brutal and self-inflicting expression of disapproval—brutal, because it is ungodly, unchristian and unaltruistic; self-inflicting, because the ill-effect of it reacts upon the person enangered.
There can be no "righteous anger." Disapproval there must be, because man has been endowed with the faculty of Divine Selection, and thereby shows a divinity denied to all other living things whose preferences are called in Science "natural selection." Disapproval in the interest of harmony—Divine Selection—and disapproval in the creation of discord—anger—are, the one holy, and the other unholy, uses of the faculty of selection.
There may be, then, righteous disapproval, but there never can be "righteous anger."