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Our new research on crime by undocumented immigrants was the most downloaded research at the Social Science Research Network over the last week

Jan 24, 2018 | Featured

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Our new research on crime by undocumented immigrants was the most downloaded research at the Social Science Research Network over the last week (link here).

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New Research: The worst 2% of U.S. counties produce an even larger share of firearm murders than of murders overall. Those counties account for 53% of all murders but 57% of firearm murders. U.S. murders are concentrated far more heavily than Canada’s and Australia’s.

New Research: The worst 2% of U.S. counties produce an even larger share of firearm murders than of murders overall. Those counties account for 53% of all murders but 57% of firearm murders. U.S. murders are concentrated far more heavily than Canada’s and Australia’s.

by | Oct 6, 2026 |

We have previously examined how heavily murders concentrate in the United States, but this is our first analysis of firearm homicide concentration. The first two graphs show that the worst 2% to 5% of counties account for a share of firearm murders about four...