An "Irish nationalist" is someone who supports the idea of a united Ireland, where all of the island of Ireland is governed as one entity, independent from British rule. This movement seeks to promote Irish culture, language, and identity, often advocating for political and social changes to achieve these goals. Irish nationalists have historically been involved in various political movements and organizations, such as the Irish Republican Army (IRA) and Sinn Féin. They often emphasize the importance of self-determination for the Irish people and may engage in peaceful protests or political campaigns to further their cause.