Some may opine that your dismissal of the illegal immigrant population as harmless is tacit approval the act of immigrating illegally.
When have I dismissed the ENTIRE illegal population as harmless?
Keep in mind, there are Cubans still in jail from the Mariel boatlift in 1980...they need to stay there.
Yet, you also can't judge the entire illegal alien population according to it's lowest denominator.
Street gangs have existed since long before the Mexican illegal alien explosion.
I recall gangs headed by guys named Capone, Luciano, Gambino, O'Banion, Weiss, and Lansky.