Follow the pronouns. We look for an innocent person to tell us he did not do it: "I did not firebomb the building..." with the three component reliable denial:
1. Pronoun "I"
2. Past tense "did not"
3. Specific language: "firebomb the building"
It is often the first thing someone writes, or says, when he did not do it.
It is something the innocent say early, and often, and may not even wait to be asked, as long as the accusation is known.
Rule: If the subject cannot bring himself to say he did not do it; we are not permitted to say it for him.
In the below, does Wayne Moore tell us that he did not do it?
First, a wikipedia entry about the case. We seek truth through statements. Whether the trial was fair or not, is not answered here, this is limited to the petition ascribed to Wayne Moore. We analyze only this statement, not the case, nor the evidence, nor the allegation of bribing witnesses, nor anyone's motives. This is strictly limited to analysis of the petition that bears the signature of Wayne Moore.
2. Petition with Analysis
In the 1960s and 1970s, African-American residents of Wilmington, North Carolina were unhappy with the lack of progress in implementing integration and other civil rights reforms legally achieved by the American Civil Rights Movement. Many struggled with poverty and lack of opportunity. The 1968 assassination of Martin Luther King, Jr.increased racial tensions, with a rise in violence, including the arson of several white-owned businesses.
Racial tension increased after the 1969 integration of Wilmington high schools, as the city closed the black Williston High School, a source of community pride. It laid off black teachers, principals, and coaches, transferring students to other schools. There was little preparation of whites or blacks for the changes. The school administration resisted meeting with the students to hear their grievances, including separation from friends and the lack of opportunity to play sports in new schools.Several clashes between white and African-American students had resulted in a number of arrests and expulsions.
In response to tensions, members of a Ku Klux Klan chapter and other white supremacist groups began patrolling the streets. They hung an effigy of the white superintendent of the schools and cut his phone lines. Street violence broke out between them and black men. 
Students decided to boycott the high schools in January 1971. In February, the United Church of Christ sent Reverend Benjamin Chavis, Jr., from their Commission for Racial Justice, to Wilmington to try to calm the situation and work with the students. He preached non-violence to them and met with students regularly at Gregory Congregational Church to discuss black history, as well as to organize the boycott.
Arson at Mike's Grocery and trial
On February 6, 1971, Mike's Grocery, a white-owned business, was firebombed. Firefighters responding to the fire said they were shot at by snipers from the roof of the nearby Gregory Congregational Church. Chavis and several students had been meeting at the church, which also held other people. The neighborhood erupted in rioting that lasted through the next day.
The governor of the state called up the National Guard, whose forces entered the church on February 8 removed the suspects. They claimed to have found ammunition in the building. The violence resulted in two deaths, six injuries, and over $500,000 in property damage.
Chavis and nine others, eight young African American men who were high school students, and an older white woman, an anti-poverty worker, were arrested on charges of arson related to the grocery. Based on testimony of two African-American men, they were tried and convicted of arson and conspiracy in connection with the firebombing of Mike's Grocery.
This is a good place to say he did not do it, and not take ownership of his conviction. "the conviction" is expected more than "my" conviction. Strongest would be "I did not firebomb the building in North Carolina" and then talk about a wrongful conviction. This is where it should start, with the reliable denial as the reason for writing.
When I was 19, a prosecutor framed me and nine other civil rights activists for firebombing a building in Wilmington, NC. We were dubbed the Wilmington Ten, convicted by a jury that included multiple KKK members, and sentenced to 29 years in prison.At nineteen, I had dreams of becoming a lawyer or running for office. But when I was released on parole eight years after my conviction, I was shunned by my community and had trouble finding enough work to get by. Worst of all, after being away for so long, my children no longer trusted me.I'll never get back what I lost -- nor will the other nine people who were wrongly imprisoned. But we deserve to be officially declared innocent. The governor of North Carolina will issue her last pardons over the next two weeks, before she leaves office. I started a petition on Change.org asking Governor Perdue to reverse the injustice that tore our lives apart and pardon the members of the Wilmington Ten. Will you sign my petition?
Note that "crimes" is plural
The Wilmington Ten were working together in 1971 to integrate public schools in our community.Jay Stroud is the District Attorney responsible for our unjust sentencing. He built his case on the testimony of three convicted felons, all of whom retracted their statements just a few years later. A few weeks ago, the notes he took during the trial were released. They show that Stroud bribed witnesses and tried to recruit a jury with as many white racists as possible -- one note next to a jury member read "possibly KKK good."I have been fighting against my wrongful conviction for decades, before and after I was released. I have struggled tremendously over the years to overcome the paralyzing effects of being imprisoned for crimes I never committed -- but I am determined to clear my name.
Note that "crimes I never committed" is not a reliable denial.
Governors usually issue pardons during their last week in office, and with North Carolina's governor set to leave at the end of the year, this could be our last chance to get a pardon and send a message to the entire country that this injustice will not be tolerated.The city of Wilmington has already apologized. It is now time for the state of North Carolina to do the same by granting The Wilmington Ten a full pardon of innocence.Please sign my petition today and urge Governor Perdue to pardon me and the other members of the Wilmington Ten.Thank you for your help.Wayne Moore