Dozens of people were arrested outside the U.S. Embassy in London on Saturday during a protest supporting the proscribed group Palestine Action, according to police. The demonstrators were charged with breaching public order laws.

The protest took place near the U.S. Embassy in central London. Police reported that the group Palestine Action is banned under UK law for promoting violence and terrorism. The arrestees were part of a larger demonstration that included speeches and banners.

This is the second time in a month that a similar protest has occurred near the U.S. Embassy. Previous demonstrations have also resulted in arrests. The UK government has repeatedly warned against supporting groups it deems extremist.