#OnThisDay 1922 William Twaddell, MP in Stormont was assassinated by the IRA in Belfast. Twaddell was associated with the Imperial Guards, one of the loyalist militias incorporated into the Ulster Special Constabulary who openly discriminated and killed Catholics. Following this, the Unionist Government introduced internment & 350 republicans are immediately detained. All republican organisations are declared illegal. Over 700 republicans were interned until 1924.