It's more embarrassing to black people because they don't realize that if a black is going to get murdered it will most likely be by another black person
No, what's embarrassing is that clueless white people don't understand why black people might get upset when the police murder their children for traffic violations and shoplifting beefs.
Let's compare.
Dylan Roof shoots 9 black people in a church. The police not only take him into custody, but they ask the poor dear if he's hungry and stop at Burger King to buy him lunch because the poor things was looking a little peckish. Then they made darned sure that no one took a pot shot at him on his way to the jail.
Sandra Bland changes lanes with signalling, for which she is threatened with a taser, thrown to the ground, dislocating her shoulder, and put in jail unattended where she commits "suicide" (no, really) under mysterious circumstances.
Yeah, black people see these kinds of disparities, and they are upset about them for some reason.