The escalator was one of many escalators at a local McDonald’s, a few blocks away from the one where Mr. Almanzar was shot and killed.
The police were patrolling the area, and a group of protesters began hurling stones and fireworks at the police.
They were met by a barrage of gunfire.
The gunfire was directed at the officer, who was hit.
Police fired back, and the protesters fled the area.
Two days later, the officer was shot by a man he was trying to arrest.
He was taken to a hospital and pronounced dead.
The video shows a large group of people holding a banner reading “No more escalators!” and holding a sign that says “Stop the escalation.”
They then walk up to the officer and shout, “No escalation.”
The officer turns and fires several shots at them.
The group of men then retreats back to their vehicle, a black SUV with tinted windows.
“The officer was unarmed,” said Michael G. Garcia, a former police officer who is now a journalist and activist.
“He was just trying to serve his community, and he was shot.”
The incident has triggered widespread outrage in Mexico.
A spokesman for the National Police, Jose Rios Vives, said police officers are trained to “disperse in a way that is consistent with the law,” and that the shooting was “an isolated incident.”
“This is a tragedy,” he said.
“This is not an isolated incident.
It is a national tragedy.”
After the shooting, the group of activists returned to the McDonald’s to confront the group and ask them to leave, according to the video.
“No, we will not leave,” one of the men says.
They are ordered to leave.
Almanzar’s family, who lives near the McDonalds, said the officers who shot him had been assigned to patrol a separate area.
“They’re trained to do that,” said Maria Elena Almanzador, who has been a member of the protest group, La Gente Almanza.
Ms. Almansador, whose father is a police officer, said she was among a group that was not in uniform.
“My son is an officer, and I’m an activist,” she said.
Another protestor, Luis Gómez, said he was not surprised by the shooting.
He said the police, after the protests, had been harassing his group for days, even calling it a “terrorist” group.
Some of the demonstrators also say the shooting is a sign of how the government is trying to control protests.
They want to shut down protests and make it easier to evict protesters, and they want to make it difficult for people to organize a march.
In a recent television interview, President Enrique Peña Nieto acknowledged that the police used excessive force and said that they should be allowed to carry out their duties.
Pena Nieto, in his interview with Univision, said that in the past, the police had shot protesters on the spot, and that there were “a lot of cases” of excessive force.
His office later released a video in which Peña said, “The only thing that the government does is to put pressure on and to control the media and to shut it down.
They do this to keep the population from organizing and to keep it silent.”
As he was speaking, Mr. Peña told Univision that the violence against demonstrators and those who protested against the police was “a crime.”
The police union is accusing Peña of hypocrisy.
“It’s just a statement of what he’s doing.
He’s saying, ‘We have to do this, we have to control this.’
And he’s right,” Carlos Marquez, the union’s national president, told Univisions.
“And we’re telling him: You’ve been there, you’ve done it.
It’s all you can do to continue to do what you’re doing.
That’s why we are telling you, ‘You have to leave.'”
Ms., Almanar said she hopes to see the Mexican government prosecute the officers involved in the shooting and other recent killings of protesters, including Mr. Garcia.
“The question is what should happen to the officers that did this to him,” she told The Wall Street Journal.
“The question should be how do we ensure that they get punished for this, and if there’s a way to do it, I think we need to see it.”
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