Had trayvon succeeded in smashing Zimmerman's skull, would we have heard of this case?

Nope. A few months after the Martin/Zimmerman incident a 17 yr old white male was shot by a 30 yr old black male. Never made any news. Happens all the time. The media got exactly what they wanted.

Sure we would've.

The media would've hailed his actions as self defence against an armed creeper.

One who was out stalking teenagers on a dark & rainy winter's night in Florida.

Given Zimmerman's long history of violence, nobody would've shed a tear:

-Arrested for assaulting police and resisting arrest;

-Fired from a security job guard for assault;

-Slapped with a restraining order for assaulting his then-fiancee;

-Reported to the cops & homeowners association by his neighbors for aggressive behaviour;

-Accused of sexually molesting his own cousin for nearly a decade.

It would have been an "unsolved case" of a person being murdered-

That's tough. I would say that we probably wouldn't have heard about it unless we lived in Florida.

Zimmerman murdered an unarmed child, I dont need to look at different scenarios, this one is disgusting enough and makes our country look backwards and ignorant and bigoted and it is true.