The single biggest cause of a violent untimely death for a black persons in the UK and the US is being killed by another black person.
It's true that most whites murdered are murdered by other whites but the rates for blacks killing blacks, on a per capita basis are massively higher than the rates for whites killing whites.
Interracially, on a per capita basis, blacks kill whites at around twelve times the rate as the other way around in the US.
The police kill, arrest and stop a disproportionate amount of blacks based on their percentage of the population but these disparities are caused primarily by the disproportionate violent crime rates for blacks as reported by witnesses to crimes.
In the US whites arrested for violent crimes are significantly more likely to be killed by the police than blacks arrested for violent crimes.
Blacks are 3.57 times more likely to be arrested for a violent crime vs whites in the US but are only 2.5 times as likely to be killed over the course of their lives by police than whites
The claim is often then made that blacks commit more crime either because they are poor or because of some legacy of suffering from slavery and segregation.
Neither of these make any sense when examined more closely.
There are nearly three times as many whites living in poverty in the US than blacks as an absolute number (the percentage for blacks as group is about double that of whites but there are far fewer blacks overall than whites).
So if poverty was the main issue then the poor whites should be massively inflating the rate of overall violent crimes for whites vs the smaller number of blacks living in poverty on the US.
If a legacy of oppression was the cause of crime then we could expect one of the most consistently oppressed groups in all of history (the Jews) to top the per capita rates for violent crime but we don't see this.
Instead we see them and other minority groups who often entered the US poor like Koreans and Indians not only surpassing blacks in many metrics (including not being arrested or incarcerated) but also significantly beating the white majority in many cases.
The conclusion should be obvious.
Culture matters and not all cultures are equal.
Whites don't underperform Koreans in many metrics in the US due to racism, systemic or otherwise, they do so because large parts of white culture in the US are inferior to large parts of the culture adopted by Koreans living in the US when it comes to things like economic success and avoiding incarceration.
The same applies to other racial groups when compared to one another.
You can also look at the significant disparities within 'blacks' as a group.
Whites are one of the least likely of all racial groups to goto university in the UK.
Afro Caribbeans attend a rate close to whites but black Africans attend at a much higher rate than either whites or Afro Caribbeans.
Again the answer is in culture not racism.
Whites don't underperform Koreans in many metrics in the US due to racism, systemic or otherwise, they do so because large parts of white culture in the US are inferior to large parts of the culture adopted by Koreans living in the US when it comes to things like economic success and avoiding incarceration.
The same applies to other racial groups when compared to one another.
You can also look at the significant disparities within 'blacks' as a group.
Whites are one of the least likely of all racial groups to goto university in the UK.
Afro Caribbeans attend a rate close to whites but black Africans attend at a much higher rate than either whites or Afro Caribbeans.
Again the answer is in culture not racism.
Source references shown here