-This is all very "reasonable" by the methods and epistemology of Murray's world, and I'm afraid—not a figure of speech, actually afraid—that there's nothing I could say, no words I could possibly type to explain the cruel and capricious insanity of that world's "reasonableness" to those who haven't personally been on the other side, who have never been abused by a total institution like the "justice" system.
+This is all very "reasonable" by the methods and epistemology of Murray's world, and I'm afraid—not a figure of speech, actually afraid—that there's nothing I could say, no words I could possibly type to explain the cruel capriciousness of that world's "reasonableness" to those who haven't personally been on the other side, who have never been abused by a total institution like the "justice" system. Two three-day stints in the psych ward are [what did it to me](/2017/Jun/memoirs-of-my-recent-madness-part-i-the-unanswerable-words/). Going to school might not be bad enough if you went to a good school.
+
+_The authorities are usually trying to get it right._ [by the authority's own corrupt standards!! TODO: ...
+http://benjaminrosshoffman.com/can-crimes-be-discussed-literally/
+https://archive.is/HUkzY
+finish section]
+
+Murray presents a table of black/white and Latino/white ratios of arrests for violent crimes in thirteen cities for which data was available. The median black/white ratio was 9.0 (that is, 9 blacks per 1 white) and the median Latino/white ratio was 2.4.
+
+To argue that these ratios are driven by real differences in behavior rather than biased police, Murray attempts to "triangulate" the true crime rate with other data.
+
+For example, arrests for murder specifically are going to be less biased by selective enforcement or fraud: even evil and corrupt cops who don't consider themselves above, say, planting evidence of drugs, seem less likely to fake a human corpse. So if racial differences in murder charges match differences in violent-crime arrests more generally, that's probabilistic evidence that arrests are tracking a real difference in criminal behavior.
+
+Interestingly, Murray argues that this is true even if you don't think police are generally getting the right suspect (!!), as long as the suspect who is arrested is of the same race as the actual perpetrator, which will usually be the case given how many murders are crimes of passion where the victim and perpetrator knew each other (in highly segregated communities), or tied to gang activity (where gangs are almost always monoracial). The scenario most prone to racist police getting the wrong guy—non-gang-related murders where the alleged perp is black and didn't know the victim—only accounted for 4% of all homocides. Meanwhile, the group ratios for murder arrests are more stark than for violent crimes more generally: a median black/white ratio of 18.1, and a median Latino/white ratio of 4.7, which is not the pattern we would expect to see if cops were using their discretionary powers to falsely imprison blacks and Latinos on lesser charges.
+
+[TODO: the police getting the wrong guy of the same race is the kind of thing that would contribute to structural racism—if the System is going to treat you interchangeably anyway, that changes your incentives]