Allaying India’s concerns over activities of pro-Khalistani elements in the UK, British Prime Minister Rishi Sunak asserted on Wednesday that no form of extremism is acceptable, adding that the right to hold lawful protest does not extend to violent or threatening behaviour.Allaying India’s concerns over activities of pro-Khalistani elements in the UK, British Prime Minister Rishi Sunak asserted on Wednesday that no form of extremism is acceptable, adding that the right to hold lawful protest does not extend to violent or threatening behaviour.