OK, I read the Heritage Foundation report (assuming it's
this one) and I looked at national homicide and violent crime statistics on the FBI website.
First off, yes, I don't put a lot of stock in the Heritage Foundation but I read their report and the numbers they use in it. It's almost like the author got paid for how many times he mentioned George Soros.
But as for actual data, they start with this chart, which sure enough shows a lot of red states at the top of the homicide per capita list:
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But they seem to hinge their argument on this chart:
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Except they don't finish working the problem by putting in the adjusted numbers and reranking the states. So, I did. Full disclosure, I typed all that in excel, so it's possible I fat-fingered some of the data. Also, the states in red are the states the Heritage Foundation calculated new values for.
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What that seems to show is still a lot of red states at the top of the list. Of the Top 10 states, seven are pretty solidly red (Louisiana, Mississippi, South Carolina, Alabama, New Mexico, Oklahoma and Alaska). Two are solidly blue (Maryland and Delaware). And I'd argue Nevada with it's republican governor but democratic-held state legislature is fairly purple.
The biggest winner when you rerank with the Heritage Foundation data is Illinois... with it's democratic governor, two democratic senators and democratic-held state legislature. Though Tennessee also fared well, too.
So, if anything, the data the Heritage Foundation uses doesn't contradict the Third Way report, it reinforces it. Even if you take out large metro areas, red states tend to rank higher in murders per capita.
Next, as you suggested, I looked at national homicide statistics. I found
this chart on the FBI website for 2019 (which is the most recent year listed). If you have another source, I'm happy to consider it. But that this chart shows is that for 2019, there were 7,964 arrests for murder or non-negligent homicide. 3,650 of those arrests were white and 4,078 were black (which seems like a fairly small difference), which breaks down to 45% white and 51% black.