Exclusive: Baroness Chakrabarti said the latest arrest demonstrates the dangers of the ongoing proscription of Palestine Action, which is being challenged in the courts

A free speech row has erupted after a man holding a provocative pro-Palestine sign was arrested outside Westminster Magistrates Court.

Exclusive: Baroness Chakrabarti said the latest arrest demonstrates the dangers of the ongoing proscription of Palestine Action, which is being challenged in the courts