Why do liberals want a possible repeat or growth of MS-13/M18?

Some backstory:
Los Angeles was more conservative than liberal from the 1920’s to the 1950’s but it was more of a economic than a social conservatism.

Most of it's residents before 1950 were native-born Protestants from the Mid-West, Texas and other Western states which helps explain why LA was capital of Country-Western music up until the late 1950’s.

Then, starting during WW 2, every race and ethnic group became increasingly represented and internal migration was from a wider variety of states.

And by the end of the 1960’s, LA was a strongly Democratic city and it has continued to move further in that direction during this century.

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The Maras emerged out of 1960's El Salvadoran gangs, and then spread to the Los Angeles in the 1980's through refugees from the country's violent civil war, and from illegal Salvadoran immigrants in the United States of America. It may have spread to Honduras from Hondurans in the US. Salvadoran youths were not readily accepted by other Hispanics, and particularly Mexicans in the area and were often attacked by these countries owned gangs.

The Salvadoreans formed MS-13 and M18 as a means of protecting themselves from other street gangs. They become deadly rivals, and like any gang of serious criminals became involved in committing crimes such as drug, human, and weapons trafficking, ambushing, arson, assault, assassinations, attempted murder, bank fraud, bank robberies, beheading, body part dismembering and severing, bombings, burglary, cargo theft, carjacking, car theft, cheque forgery and fraud, contract killing, copyright infringement, conspiracy, counterfeiting, credit card fraud and theft, drive-by shootings, extortion, fencing stolen property, home invasion, identity document forgery, identity fraud, identity theft, illegal gambling, illegal immigration, interstate and foreign transport of stolen property, larceny, kidnapping, manslaughter, mail fraud, money laundering, murder, organized retail crime, people smuggling, prostitution, protection racket, racketeering, rape, receipt of stolen property, robberies, sending threatening communications through in interstate commerce, theft, torture, trafficking in stolen goods and cars, truck hijacking, vandalism, wire fraud, witness intimidation, and witness tampering.

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Tens of thousands of Salvadorans, Guatemalans, and Hondurans, many of them unaccompanied minors, have arrived in the United States in recent years, seeking asylum from the region’s skyrocketing violence.

The number of asylum seekers worldwide originating from the Northern Triangle reached 110,000 in 2015, a five-fold increase from 2012. Unaccompanied minors accounted for much of this surge. Migrants from all three countries cite violence, forced gang recruitment, and extortion, as well as poverty and lack of opportunity, as their reasons for leaving. While Belize, Nicaragua, Costa Rica, and Panama have reported a sharp increase in flows from the Northern Triangle since 2008, most migrants are passing through to settle in the United States. In 2015, the latest year for which data is available, as many as 3.4 million people born in El Salvador, Guatemala, and Honduras were living in the United States, more than double the estimated 1.5 million people in 2000. About 55 percent of them were undocumented.

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My thoughts:
These sanctuary cities that harbored the illegals in the first place later deported the most violent criminals (rather than executing them). They fled south into Central America where they established a stronghold within the Northern Triangle countries where we fast forward to present day with illegals continuously pouring (around 40 a day) in from the same areas from before but worse (excluding Mexico since it has been declining). There are still around 10,000 MS-18 members residing in the US.

From the standpoint of what I can see, liberal policies created this whole charade of violence/death just like how they support ANTIFA/BLM where the lot of them go out dressed all in black behind guy fawkes masks/folded bandanas to create anarchy and chaos.

https://www.youtube.com/watch?v=xINgd-79XSo