Clashes have broken out between French riot police and asylum seekers as authorities began destroying makeshift shelters in the grim shantytown on the edge of Calais known as the "Jungle".
- Asylum seekers ripped away barbed wire from border fence, used a pole to smash a section open
- Authorities responded with tear gas, fixed the fence and called in reinforcements
- UN's rights chief criticised a "rising roar of xenophobia" towards asylum seekers
Police lobbed tear gas canisters at protesters as around 20 workers moved in to start pulling down the shacks by hand on Monday.
As night fell some 150 people threw rocks and struck vehicles heading for England on a port road which runs next to the sprawling camp.
Several trucks and cars were blocked by asylum seekers on the stretch of road overlooking a piece of ground which had previously been part of the Jungle.
Australian Kirsten Shirling of the Good Chance theatre group, based in the Calais camp, told ABC NewsRadio the protests flared up again on Tuesday morning.
"About 9 o'clock this morning they brought in the bulldozers and about 50 police cars and over 100 police with chainsaws, a water cannon and literally started evicting people by force," she said.
"Houses were pulled down by chainsaws and bulldozers, and when people were defending their houses that's when the teargas was fired.
"Obviously people retaliated. There was a lot of tension. We think probably around 200 homes were destroyed today."
The demolition of the southern half of the camp began after a court petition by charities to stop it was rejected last week.
The French operation came as dramatic scenes emerged on the border between Macedonia and Greece as asylum seekers used a steel pole to break down a barbed wire fence.
About 7,000 people are stuck on the Greek side of the border trying to get through to Macedonia, and tensions boiled over at the Idomeni camp overnight.
Asylum seekers ripped away barbed wire from the border fence before using a pole as a battering ram to smash a section open.
Around 300 people forced their way through a Greek police cordon and raced towards a railway track between the two countries.
They threw stones at Macedonian riot police and shouted: "Open the border!"
Authorities responded with several rounds of tear gas, fixed the fence and then called in reinforcements.
At least 30 people, many of them children, requested first aid in the stampede that ensued, the charity Doctors Without Borders (MSF) said.
Skopje said one of its policemen was hurt and required hospitalisation.
The protest occurred several hours after Macedonia allowed just 300 Syrians and Iraqis to cross.
With Austria and Balkan states capping the numbers of asylum seekers entering their soil, there has been a swift build-up along the Greece-Macedonia border with Athens warning that the number of people "trapped" could reach up to 70,000 by next month.
The UN's rights chief criticised a "rising roar of xenophobia" towards asylum seekers.
"To keep building higher walls against the flight of these desperate people is an act of cruelty and a delusion," Zeid Ra'ad Al Hussein said.
'Not my Europe': Merkel lashes Austria
In a sign of widening divisions within the European Union, German Chancellor Angela Merkel meanwhile lashed out at Austria and Balkan states on the migrant route for abandoning debt-laden Athens to asylum seeker chaos.
"We can't just abandon this country," she said, referring to Greece.
The spate of border closures was sparked by Austria's announcement it would accept no more than 80 asylum claims per day and cap the numbers of those seeking to cross its territory.
"Because Austria decided on a limit of 80 per day, and not one more, we have reached today's situation," Ms Merkel said.
"When one insists on his border, the other suffers. That's not my Europe."
Austria quickly hit back at criticism, describing it as "absurd".
"We don't have to take criticism from anyone on any side," Interior Minister Johanna Mikl-Leitner told the Austria Press Agency.
"Apparently for some, the European solution [to the crisis] is for all [asylum seekers] to mass in Austria."
Macedonian President Gjorge Ivanov meanwhile warned that once Austria reaches its limit on migrant entries this year, the Balkan refugee route will have to close.
"When Austria reaches its limit, it will happen," he said.
Asked when that might occur, he replied: "Perhaps right at this moment."