Haiti's current economic and political collapse has a Made in America label.
The headlines say that the gangs are out of control. So much so that Haiti's president has asked for U.S. troops. This recent assassination of an opposition politician would seem to indicate this to be true, but all is not as it seems.

Powerful business families in Haiti have been paying gangs to sustain the security of their trade for them...Haitian politicians have increasingly resorted to gangs as a more reliable and obedient source of power to suppress rebellions.

Haiti has reconstituted a small army, which has engaged in pitched battles with the gangs in the streets, but that is misleading.

What appears to be state resistance is often a show intended to mask that many of the gangs are collaborating with the government.
“Any skirmishes are symbolic. The reason the gangs are being allowed to proliferate is because elections are coming up,” she said.

The reality is that the line between politicians, gangs, and police in Haiti was blurry to non-existent even before President Jovenel Moïse was assassinated on 7 July 2021.

What had started as an anti-gang operation in a poor and largely forgotten neighborhood — in a poor and largely forgotten country — ended in the summary execution of innocent civilians on a school campus.
The police officers were working with the United Nations Mission for Justice Support in Haiti.
...When the police finally left the campus, around 11 a.m., nine civilians lay dead in the courtyard — five of whom had been shot in the head. Not a single firearm was recovered, suggesting that the killings were “summary executions,” RNDDH reported.

The elites in Haiti have kept power with violence since it was a slave colony.
The La Saline massacre in 2019 was the perfect example of why another U.S. invasion in the name of "security" is not the solution.

When a police truck carrying men in uniform pulled into an impoverished neighborhood in the Haitian capital, residents thought it was an official operation.
...
Then the men opened fire. Joined by local gang members clad in black, they went house to house with long guns and machetes, pulling unarmed people into the narrow alleys and killing them with single shots or machete blows, witnesses told The Associated Press.

Something north of 21 men were killed by this combination of police and gang members. Children as young as 4 were shot to death, their bodies then fed to dogs and pigs. Women were raped and set on fire. Neither police station in the area sent any officers to stop the killings.

Some residents and local rights groups say the killers were gang members working with corrupt police to seize territory in the La Saline gang war. But others accuse Haitian government officials of orchestrating the massacre to head off anti-corruption protests that often start in the neighborhood, an opposition stronghold.
...“The authorities have said nothing,” Gilles said. “They haven’t even condemned this massacre.”

The La Saline slum was known for mobilizing grassroots political activity. The massacre happened shortly after the biggest anti-government protest of the year.
In spite of these horrific massacres and police repression, or maybe because of it, a strong pro-democracy movement was gaining strength before Haiti's president was killed, and it has continued up to present day.
Dozens, if not hundreds of protestors have been shot down by police.
It's because of this that the people of Haiti do not want yet another military invasion by the United States.

“After victory, what follows next is an important question,” she advises. “The grassroots have nothing, but they know what’s going on: I was told by protesters that any Haitian government you see backed and supported by the U.S. is generally not one that is good for the Haitian people.”
...
She said the U.S. built its largest embassy in the Western Hemisphere in Haiti to control Haiti’s geopolitical position and strip it of its assets and riches.
“They will obliterate Haiti before they allow it to succeed as a nation,” Dantò said. “There is white fear of Haitian success.”

The U.S. is currently trying to push through a U.N. resolution for a military occupation of Haiti. The reasoning is to help Haiti's police confront gangs that have created a humanitarian crisis.
Anyone that can both read the news and has even a short memory knows that this means that U.N. force will enter Haiti with the intention of defending the very people that have caused all of the suffering.
From 1915 to 1934 the U.S. occupied Haiti for the benefit of U.S. banks when Haiti couldn't pay back its loans. During that time the U.S. centralized political power in the country and laid the groundwork for the rise of the Duvalier dictatorship.

The last big intervention also began with a “request” by an unelected official. This led to a UN peacekeeping force called Minustah, brought in to “stabilize” Haiti after the US-backed removal of president Jean-Bertrand Aristide. It stayed for 13 years. Early in its tenure, in 2005, I was part of a small human-rights team that investigated the force. We concluded that rather than promoting peace and justice, UN troops helped the police terrorize the poorest quartiers of the capital Port-au-Prince, bastions of support for Aristide. Many civilians alleged that Minustah troops, many of them Brazilian soldiers with experience in “cleaning operations” in Rio de Janeiro’s favelas, perpetrated the atrocities themselves.

A U.N. intervention could help Haiti, but it would require first recognizing that a) the gangs are supported by the Haitian ruling class, b) that the current government is illegitimate, c) the police are corrupt, and d) that the Haitian people should decide their fate.
So far none of that appears likely. Which means we are looking at another failed and disastrous military intervention.