The violent Central American thugs who participated in the various Central American insurgencies and revolutions coming up to America after the fall of the USSR and Cuba illegally started gangs in the US based on their violent communist .
The gang members were vets of the civil wars and had ties to Cuba and the drug cartels and revolutionary terror groups who help train and organize them.
Implicit in the author’s explanation is the notion that previous deportation exacerbated the problem.
I wholly reject that reasoning and believe the theory was contrived to pursue an anti-American, pro-invasion agenda.
By and large, Latin America is responsible for their own social ills, many of which derive from their widespread socialist leanings as you point out.