(1) The ringleader of the murderers was an illegal immigrant. It looks like at least two of his accomplices were US citizens.
(2) The punks who accompanied him had no father at home and no discipline. They were underage kids drinking malt liquor and sticking people up in the wee hours.
(3) The school system that they were theoretically students of encourages kids like this to drop out and fall between the cracks, despite the efforts of activists to promote school choice to provide needed discipline for criminal teens.
These murders happened because many things are very wrong in Newark - illegal immigration was only one factor.
But many people grow up without fathers, live in crime-ridden neighborhoods, and attend schools where gangs and drugs are present, yet still go on to make the right choices, become productive citizens, and successfully raise families of their own.
These four animals made the wrong choices. It’s really about free will. They freely decided to do wrong.