>Only about 25% of the people killed by police are black; about 50% are white.

And in the US population, around 12% of people are black and 70% are white, so black people are overrepresented in police killings.

Well then it’s a good thing that measures against police brutality will help everyone not just black people then, isn’t it?

>There's definitely a tribal aspect

I disagree, I think it's historical context. The KKK used to infiltrate the police throughout the south. The police aided and abetted domestic terrorism against black people. There are people still living who remember this. It's not tribalism to point out that you are being targeted based on your race and being sensitive to that threat. If you want to call out tribalism, call out the group that is targeting others based on race. They are the tribal ones.

It's tribalism to ignore the fact that others are affected by the same problem. Police rarely face serious consequences regardless of race.

The historical context may justify the tribalism in some eyes, but it may also blind those eyes to the larger problem that affects everyone.

I guess the difference is that white people don't care as much when a white person is murdered by a cop. We distance ourselves from it and try to rationalize it.

No one is ignoring that. You’re upset with something that isn’t happening.