D&C 135

 Upon the martyrdom of the Prophet Joseph Smith and his brother Hyrum, John Tayler testified - 

"They were innocent of any crime, as they had often been proved before, and were only confined in jail by the conspiracy of traitors and wicked men; and their innocent blood on the floor of Carthage jail is a broad seal affixed to “Mormonism” that cannot be rejected by any court on earth, and their innocent blood on the escutcheon of the State of Illinois, with the broken faith of the State as pledged by the governor, is a witness to the truth of the everlasting gospel that all the world cannot impeach; and their innocent blood on the banner of liberty, and on the magna charta of the United States, is an ambassador for the religion of Jesus Christ, that will touch the hearts of honest men among all nations; and their innocent blood, with the innocent blood of all the martyrs under the altar that John saw, will cry unto the Lord of Hosts till he avenges that blood on the earth..."  (Doctrine and Covenants 135:7)

I specifically note, "on the magna charta of the United States" or constitution.