So goes the conventional wisdom. But is it true?
In fact, according to evidence cropping up in various places, the opposite may be the case. Ramiro Martinez Jr., a professor of criminal justice at Florida International University, has sifted through homicide records in border cities like San Diego and El Paso, both heavily populated by Mexican immigrants, both places where violent crime has fallen significantly in recent years. “Almost without exception,” he told me, “I’ve discovered that the homicide rate for Hispanics was lower than for other groups, even though their poverty rate was very high, if not the highest, in these metropolitan areas.” He found the same thing in the Haitian neighborhoods of Miami. In his book “New York Murder Mystery,” the criminologist Andrew Karmen examined the trend in New York City and likewise found that the “disproportionately youthful, male and poor immigrants” who arrived during the 1980s and 1990s “were surprisingly law-abiding” and that their settlement into once-decaying neighborhoods helped “put a brake on spiraling crime rates.”
via New York Times