“No oppression is so heavy or lasting as that which is inflicted by the perversion and exorbitance of legal authority.”
Samuel Johnson in The Rambler, no. 148 (17 August 1751).
Misattributed
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Joseph Addison 226
politician, writer and playwright 1672–1719Related quotes

“Legality and oppression are not unknown to run hand in hand.”
Roberts v. Jones; Willey v. Great Northern Railway Co. (1891), L. R. 2 Q. B. [1891], p. 203.

Quran: Chapter 28, verse 83, quoted in History of the Prophets and Kings, Vol. 24, p. 102
Last Sermon delivered to People, Last Words

“Laws that oppress people have no moral authority.”
Human Rights in the Use of Software and Other Published Works (16 May 2007)]
2000s

1960s, (1963)

“An oppressed people are authorized, whenever they can, to rise and break their fetters.”
Speech on the Emancipation of South America http://www.bartleby.com/268/9/5.html, House of Representatives (24 March 1818); The Life and Speeches of the Hon. Henry Clay, vol. I (1857), ed. Daniel Mallory

“It is for real that injustice and oppression will not have the last word.”
Wallenberg Lecture (2008)
Context: It is for real that injustice and oppression will not have the last word. There was a time when Hitler looked like he was going to vanquish all of Europe, and where is he now?