Supporters clapped and cheered the arrestees, with some being carried off by multiple officers.
Defend Our Juries who organised the protest said: “Whilst the Labour party congregate at their annual conference, protestors are outside disobeying the unjust ban on Palestine Action.”
The group added supporters were risking arrest under the Terrorism Act, for “silently holding cardboard signs which say ‘I oppose genocide. I support Palestine Action’.”
It is calling for the proscription of Palestine Action as a terrorist group by the UK government to be scrapped.
Keith Hackett, 71, said he was risking arrest because he was “deeply ashamed” of Labour’s actions.
“If they want to start turning the party around and win back the support they have lost, they need to stop their complicity in this genocide and end the ban on Palestine Action.”
Fellow protestor Tayo Aluko, 63, said: “This is a time for bravery, as was shown by people who went before us, so that we can enjoy the freedoms we have today, which are now under threat.”
A group of about two hundred protestors, waving the union jack and St George’s flags and carrying placards opposing the government’s digital ID plans, had to be separated from the pro-Palestinian demonstrators by police.