This thread is taking the direction I was heading in during my reading of it.
" Treason against Illinois, June 1844[
edit]
After bail was granted under the previous charge, Augustine Spencer immediately swore out a warrant alleging that Smith had committed treason by “calling out the [Nauvoo] Legion to resist the force under the command of the Governor.”
[51] On June 24, 1844, a warrant was issued charging that “Joseph Smith, late of the county aforesaid, did, on or about the nineteenth day of June. A. D. 1844, at the county and state aforesaid, commit the crime of treason against the government and people of the State of Illinois”.
Bail could not be granted for a charge of treason, so Smith was placed in jail where he was accompanied by his brother,
Hyrum Smith, and other associates. On June 27, Smith and Hyrum were
killed by a mob in jail while they were awaiting trial."
Since the core of Mormon beliefs is that it is a theocracy, where Mormonism is above civil law, Joseph Smith believed that he was above the law. Therefore, Joseph Smith, persecuted for his belief that he was above the law, was indeed a martyr, and is regarded as such by Mormons who thus believe that Mormonism transcends civil law. [sarcasm alert]
They were in jail for treason. Their reaction to having been jailed for the destruction of the printing press was what put them back into jail.
Furthermore, the assassination of any religious leader, no matter how lawless, carries with it the consequence of his followers dubbing him a martyr and subsequent “canonization”. His assassins should have realized this.