Impacts of Illegal Immigration: Gangs
As can be seen from the aforementioned studies and references, many illegal aliens are not your casual immigration violating, ID theft committing, law breaker. Many are recidivists – a.k.a. career criminals, like Juan Leonardo Quintero, who was deported after being convicted of indecency with a child, but who later came back and then just recently killed a Houston cop in cold blood, leaving a widow and five now fatherless children.
Many of the brutal crimes referenced in the two previous sections are gang related with the growing Mara Salvatrucha (MS-13) gang being notoriously brutal in carrying out its criminal activities. How much is unknown because NOBODY IS TRACKING IT.
http://www.usillegalaliens.com/impacts_of_illegal_immigration_gangs.html