Police have raided Mexico City's historic centre to remove striking teachers from Zocalo plaza. Source: AAP
RIOT police have swept thousands of striking teachers out of the heart of Mexico City.
The authorities used tear gas, flash grenades and water cannon against protesters to bring a swift end to weeks of occupation of the Zocalo plaza over reforms to the country's dysfunctional education system.
Three days before Mexican Independence Day, the teachers armed themselves with metal pipes and wooden clubs and blocked off the Zocalo with steel grates and plastic traffic dividers, threatening to scuttle the traditional national celebration in the massive colonial-era square.
Before moving in, the government had promised that Independence Day celebrations would take place in the Zocalo as scheduled, and the head of the federal police warned on national television that police would move in at 4pm local time.
The teachers, many veterans of battles with police in poor southern states, promised not to move from the square where they have camped out since last month.
Some fixed knives and nails to wooden planks and declared themselves ready to fight.
Others set up sewage-filled portable toilets in the path of police vehicles.
Shortly after 4pm, the police swarmed in, shooting tear gas from specially equipped fire extinguishers, tossing flash grenades and spraying water from armoured trucks.
Protesters hurled sticks and chunks of pavement broken from the streets around world-famous tourist attractions including the Metropolitan Cathedral, the Templo Mayor and the National Palace.
But within a half hour, police had cleared the Zocalo and much of the surrounding historic centre of virtually all protesters.
Union organisers said they would reassemble away from the main plaza at the nearby Monument to the Revolution.
Small knots of teachers, self-described local anarchists and other supporters hurled bottles and rocks at police on some of the main avenues of downtown Mexico City.
It was a dramatic reassertion of state authority after weeks of near-constant disruption in the centre of one of the world's largest cities.
The teachers have marched through the capital at least 15 times over the last two months, decrying a plan that aims to break union control of education with a new system of standardised teacher testing that become law on Tuesday.
The teachers say blocking the reform itself is no longer the point.
They say they are now trying to maintain pressure to protect their rights and privileges as the government puts the labour reforms into effect and reduces union control over teacher hiring and assignment.
