American Injustice

The American justice system seems to be having a slew of bad unorthodox rulings lately. Once is an accident, but twice is a pattern and with the aftermath of the Troy Davis execution an even dimmer light has been cast on the continual injustice that occurs in America. In my mind, and a lot of others, the Troy Davis trial, and his execution boils down to race. Especially when compared to the trail of someone like Casey Anthony.
Troy Davis, a Black man, was convicted of murder though there was truly no substantial evidence against him and furthermore seven out of the nine witnesses recanted. It is not my position to decide whether Davis was guilty or innocent but in America our judicial system goes by the phrase "Innocent until proven guilty" and though Davis was found guilty I believe that there was not enough evidence to have found him guilty.
In contrast Casey Anthony, a White woman, was acquitted for the murder of her 2-year-old daughter even though there was a great amount of evidence against her. Though she was found not guilty of murder she was found guilty of lying to the police which can be seen as just a slap on the wrist. Once again it is not my position to decide whether Anthony was guilty or innocent but I believe that there was enough evidence that she should have been convicted.
Comparing Davis and Anthony it's hard not to feel that race strongly influenced both cases as both were charged with murder but the white woman was freed and the black man was executed. How does this make America look in the eyes of other countries who view us as a leader and fair country? What does this say about our legal system that wrongfully convicts? And most importantly what does this say about race relations among Americans?