The Ballot or the Bullet (1964), Speech in Cleveland, Ohio (April 3, 1964) 
Variant: Whenever you’re going after something that belongs to you, anyone who’s depriving you of the right to have it is a criminal. Understand that. Whenever you are going after something that is yours, you are within your legal rights to lay claim to it. And anyone who puts forth any effort to deprive you of that which is yours, is breaking the law, is a criminal. 
Context: Whenever you’re going after something that belongs to you, anyone who’s depriving you of the right to have it is a criminal. Understand that. Whenever you are going after something that is yours, you are within your legal rights to lay claim to it. And anyone who puts forth any effort to deprive you of that which is yours, is breaking the law, is a criminal. And this was pointed out by the Supreme Court decision. It outlawed segregation. Which means segregation is against the law. Which means a segregationist is breaking the law. A segregationist is a criminal. You can’t label him as anything other than that. And when you demonstrate against segregation, the law is on your side. The Supreme Court is on your side.  Now, who is it that opposes you in carrying out the law? The police department itself. With police dogs and clubs. Whenever you demonstrate against segregation, whether it is segregated education, segregated housing, or anything else, the law is on your side, and anyone who stands in the way is not the law any longer. They are breaking the law; they are not representatives of the law.
                                    
“Any time you know you’re within the law, within your legal rights, within your moral rights, in accord with justice, then die for what you believe in. But don’t die alone. Let your dying be reciprocal. This is what is meant by equality. What’s good for the goose is good for the gander.”
            The Ballot or the Bullet (1964), Speech in Cleveland, Ohio (April 3, 1964) 
Context: I don’t mean go out and get violent; but at the same time you should never be nonviolent unless you run into some nonviolence. I’m nonviolent with those who are nonviolent with me. But when you drop that violence on me, then you’ve made me go insane, and I’m not responsible for what I do. And that’s the way every Negro should get. Any time you know you’re within the law, within your legal rights, within your moral rights, in accord with justice, then die for what you believe in. But don’t die alone. Let your dying be reciprocal. This is what is meant by equality. What’s good for the goose is good for the gander.
        
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Malcolm X 180
American human rights activist 1925–1965Related quotes
“Within the extent of your knowledge, you are right.”
Source: Thou Art That: Transforming Religious Metaphor
                                        
                                         The Gift of Living With the Not Gifted http://www.wsj.com/articles/the-gift-of-living-with-the-not-gifted-1428103079 Wall Street Journal, April 3, 2015 
From interviews and talks
                                    
Martin Landau: ‘Doubt Is Important’, Washington Times (December 25, 2016)
“Never let your sense of morals prevent you from doing what is right.”
                                        
                                        Part IV, The Traders, section 1; originally published as “The Wedge” in Astounding (October 1944) 
Source: The Foundation series (1951–1993), Foundation (1951)
                                    
Larry Brantley – the heart (and voice) behind Wishbone! http://hollyfranklin.com/larrybrantley/ (September 17, 2016)