Protesters scuffled with Israeli police carrying out a court order to evict settlers from an illegal outpost in the occupied West Bank, hours after the government announced more construction in larger settlements.
Around 330 Israeli settlers live in Amona, the largest of scores of outposts built in the West Bank without official authorisation.
The Supreme Court ruled in November, after a lengthy legal battle, that settlers had to leave Amona because their homes were built on privately owned Palestinian land.
With no weapons visible, but wearing backpacks, hundreds of police walked past burning tyres and pushed back against scores of nationalist Israeli youths who flocked to Amona in support of the settlers.
Working into the night the forces made slow progress, with three or four policemen at a time lifting each of the protesters out of dwellings in which they had holed up, and carrying them away onto buses.
By dark police said only 22 of Amona's 40 families had left.
Thirteen protesters were detained by police during the scuffles and there were a few instances of stone-throwing.
A police spokesmen said at least 20 officers were injured slightly by rocks and caustic liquid thrown at them.
"A Jew doesn't evict a Jew!" the protesters chanted.
The Amona settlers themselves stayed largely put inside their homes after erecting makeshift barriers in front of their doors and vowing passive resistance to eviction.
"We won't leave our homes on our own. Pull us out, and we'll go," one settler told reporters. "It is a black day for Zionism."
On a nearby hilltop, Issa Zayed, a Palestinian who said he was one of the owners of the land on which Amona was built, watched the scene through binoculars.
"With God's help, it will be evacuated and our land will return to us," he said.
Earlier, Israel announced plans for 3,000 more settlement homes in the West Bank, the third such declaration.
