Personally, the travesty to me in all this is the way that it has been handled after the fact.

i.e.

Leaving his body in the street.
The actions/comments of the police chief.
Picking and choosing what "evidence" to release to the press
The DA being a wimp and not just making the decision on his own to not file charges.
The militarized response to the protests
The delay in making the grand jury announcement (waiting until 8pm CT)

But in terms of the actual incident itself, I was never convinced.