Edited sentence: It, and British heavyhandedness towards the wider nationalist community's reaction to it, had radicalised that community which had little faith in British policy or British goodwill.The imprisonment of people under anti-terrorism laws specific to Northern Ireland continued under the auspices of the Prevention of Terrorism Act until the Good Friday Agreement of 1998.This radicalised community became the backbone for an invigorated IRA.When internment ended on 5 December 1975 it had resulted in greatly increased support for the IRA