Listed here and available from many sources, the charges included treason, murder, arson, burglary, robbery, larceny, and perjury. One can easily add sedition to the menu.
“With the refusal of the Governor or Legislature to intervene, and having surrendered the bulk of their firearms, Mormons were left nearly defenseless to face the mob.[102] Mormon residents were harassed and attacked by angry residents who were no longer restrained by militia officers.[103][104] Judge Austin A King, who had been assigned the cases of the Mormons charged with offenses during the conflict, warned “If you once think to plant crops or to occupy your lands any longer than the first of April, the citizens will be upon you: they will kill you every one, men, women and children.”[1]”
Wikipedia