I agree that he might become a martyr if he was set to die any time soon, but he won’t. The appeals process in this country can drag on for decades and the average time between sentencing and execution for a death row inmate as of 2010 was 178 months (roughly 15 years). There is also the chance that his sentence could be commuted or overturned. Statistically speaking you have a better chance of dying of natural causes on death row than actually being executed.
(My goodness — what a dark internet search path that was! Time to clear my browser history lest I scare my loved ones!)