Land agitation in Scotland began because of the "Home Rule" movement in Ireland and information and opinions of this movement brought by fishermen to the Outer Hebrides. Believing that they were the rightful owners of the land, crofters used rent strikes and what came to be known as land raids: crofter occupations of land to which crofters believed they should have access for common grazing or for new crofts, but which landlords had given over to sheep farming and hunting parks (called deer forests). The strife grew more intense; the landlords hired warships for protection from the crofters. From time to time there were open uprisings and riots.