Squatting (Ukrainian: сквот, romanized: skvot) is the occupation of unused or derelict buildings or land without the permission of the owner. From the 17th century onwards, there have been waves of squatting in Ukraine. In the 21st century, squatting has been practiced by different groups such as artists, anarchists, Ukrainian nationalists, displaced Crimean Tatars returning to the region and refugees created by the annexation of Crimea by the Russian Federation.