"Brian Behnken offers a sweeping examination of the interactions between Mexican-origin people and law enforcement-both legally codified police agencies and extralegal justice-across the U.S. Southwest (especially Arizona, California, New Mexico, and Texas) from the 1830s to the 1930s. The long history of the border region between the United States and Mexico has been one marked by periodic violence, but Behnken shows us in unsparing detail how Mexicans and Mexican Americans refused to stand idly by in the face of relentless assault"--