Missouri carried out the execution of Marcellus Williams on Tuesday, despite significant opposition from prosecutors who advocated for the overturning of his conviction and supported his claims of innocence. Williams, who maintained his innocence throughout his legal battle, was executed by lethal injection at the age of 55. The case has drawn widespread outrage, particularly as the prosecuting office that originally tried Williams has expressed doubts about his guilt, suggesting he may have been wrongfully convicted. The execution has raised serious questions about the integrity of the justice system and the implications of capital punishment in cases where innocence is claimed.