n entry to another's property without right or permission
n wrongfully seizing and holding (an office or powers) by force (especially the seizure of a throne or supreme authority)
a succession of generals who ruled by usurpation
Letter: ‘Papers please’ police state is approaching It is the political process itself that will foster and grow the surveillance state, now that the Genie is out of the bottle. The First and Fourth Amendments, unless vigorously defended by an aroused citizenry, are doomed to government usurpation.
Aug. 28, 2013 - Gloucester-Mathews Gazette-Journal
GOP lawmakers look to take legal action against gay marriage Republican lawmakers are considering legal action after a district judge in Bernalillo County gave the go-ahead for same-sex couples to marry there. “First we were looking at the lawlessness of Dona Anna county clerk. But now we are looking at the usurpation of the entire democratic system,” said state Sen. Bill Sharer. Sharer said district judges and county clerks have overstepped their bounds ...
Aug. 27, 2013 - KOAT Albuquerque