15-19 April - "Limerick Soviet": a general strike called by the Limerick Trades and Labour Council, as a protest against the declaration of a "Special Military Area" under the Defence of the Realm Act covering of most of the city of Limerick and its surroundings.
19 April - Sinn Féin proposes an Executive Council of the Irish National Alliance to challenge the right of any foreign parliament to make laws for Ireland.