I have literally, a few months ago, responded to comments on this site where people claimed all police were bad because of the bad actions of some.
Tribalism is a real thing, and it results in dehumanization of the other "side", and opportunistic labelling.
In 2019, 259 black people were killed by police. In the same year, 189 Hispanic people were killed by police. 406 white people were killed as well. 17 Asians. Obviously, blacks are overrepresented.
Data here: https://mappingpoliceviolence.org/nationaltrends
When was the last time you saw a national news media report on a non-black person being unjustly killed by police? It happens, and the cops get let off, routinely. Daniel Shaver is a particularly egregious example, and the lack of national media coverage helps ensure that the cops aren't held accountable. The cop who murdered him was acquitted, and temporarily rehired to let him collect a 2400 a month pension.
The national media wants this framed as PURELY a racial issue, when the reality is that it's a mix of race, police militarization, and lack of police accountability due to cozy relationship with prosecutors.
This racial framing is unnecessarily tribal, and undermines the effectiveness of achieving a meaningful goal that helps reduce this behavior by police.