What happened was a police officer by the name of Mark MacPhail was shot and killed at a Burger King parking lot.
The case went on for years. Yes, years from August 19, 1989 (when he was convicted). There were (pretty much false) witnesses and lack of proper evidence. He was sentenced to death two years later.
Lots protested against his sentencing because of the blatant bias of our court system. While I don't give a shit about whether Casey Anthony was innocent or not, I think it's really fucked up they let her off the hook WITH NO EVIDENCE while a black man like Troy gets the death sentence WITH NO EVIDENCE.
If you disagree, fine. But you better have a DAMN good reason too.