I am ashamed to admit that I didn't even know who Emmett Till was until a couple months ago. The murder of Emmett Till is one of the biggest miscarriages of justice that I have ever seen. The evidence was there, and yet the jury was so racist, they refused to convict.
My only solace is that both of Till's murderers were ostracized for the rest of their lives, and lost their businesses because of the murder.
As with most horrible events in life, there is a silver lining. Till's death so outraged the public at large, that it stoked the fires for the civil rights movement to flourish. So, in many ways, Till was a martyr for the cause of civil rights.