Dr. Kubrin quoted in the San Diego Union-Tribune story

Analyzing crime data by census block group gives a more granular view of crime, experts said. “I would not paint it as one is right and the other is wrong,” said Charis Kubrin, professor of Criminology, Law and Society at the University of California Irvine. She said reducing crime data to the lowest means “getting into the weeds” to better understand the data. “Violent crimes tend to cluster very, very heavily, and not within a (census) tract but within a couple of blocks in a neighborhood,” said Kubrin, whose specialties include crime and crime trends. “This is why you need to go down to this level, and find out what is going on.”

Read the story “Crime Counts: As crime falls to record lows, some neighborhoods are left behind” here:
https://www.sandiegouniontribune.com/story/2019-03-28/crime-counts-as-crime-falls-to-record-lows-some-neighborhoods-are-left-behind