Okay, here are the two sentences where Obama used the word "justice".
I made clear to the attorney general that we should do what is necessary to help determine exactly what happened and to see that justice is done.*
He is a good man and a fine governor, and Im confident that working together, hes going to be able to communicate his desire to make sure that justice is done and his desire to make sure that public safety is maintained in an appropriate way.
I have to say that on the surface, I see nothing wrong with Obama's words here. The way Obama uses the word "justice" in both sentences could be interpreted to mean that he seeks justice for the cop or for the victim, depending on what is found out.
Here's the problem, and why I don't blame the OP for assuming Obama is only referring to the victim when he says he wants "justice". Obama has a history of jumping to the conclusion that the accused, especially a cop, is guilty.
Look at his press conference right after the black Harvard professor was arrested by the white Cambridge Mass. cop. He runs out and said the cop "acted stupidly" before he knew any of the details.
Next, in the Zimmerman case, we all know Obama took Trayvon's side, and like the rest of the left "justice" was a guilty verdict only. Obama and the left, weren't interested in hearing all the facts in that case, they just wanted the white Hispanic thrown in jail, and nothing less.
In this case, once again, it's a white cop, and a black male victim, and it's extremely likely Obama sees only one form of "justice", and that is the cop being charged and convicted.
So although, Obama didn't actually say he wanted "justice" for the victim, I can see why any rational person would conclude that based on Obama's past practices.