John Locke's quote on law and tyranny

“Whenever law ends, tyranny begins, if the law be transgressed to another’s harm; and whosoever in authority exceeds the power given by the law, and makes use of the force he has under his command, to compass that upon the subject which the law allows not, ceases in that to be a magistrate, and acting without authority may be opposed, as any other man who by force invades the right of another.”

John Locke in his Second Essay of Civil Government said that the government becomes a usurper and a tyrant when the powers of the government are exercised not for the common good but for their own private advantage.