Who gets shot in Chicago?

The American Thinker reports:

Sociology, which is sometimes defined as the painful and tedious explication of the obvious, occasionally comes up with useful insights, or at least proof that some useful insights are true. That seems to be the case with a study by Yale sociologist Andrew Papachristos, published in the academic journal Social Science & Medicine, and featured in the Chicago Sun-Times.

It turns out that being arrested with someone else is the best predictor of who will get shot in Chicago. No, not by the police, as the Al Sharptons of the world would like to claim. Shot by another civilian, in the epidemic of shootings that have made Chicago at some times more dangerous than Baghdad.

Death by Chicago.