The Bundy family says they've owned the 600,000 acres since 1870 but the Bureau of Land Management says they are illegally grazing
Row began in 1993 when land was reclassified as to federal property after government claimed that they needed to protect a rare desert tortoise
Federal officers swooped in Tuesday with helicopters and snipers
They have reportedly seized around 350 of the 900 head herd
Tensions escalated after private militias poured in to support the family
A newly-released video has captured the moment a rancher's son was tasered by federal agents and the use of force has today provoked fresh outrage among libertarian groups across the country.
Ammon Bundy, the son of the Nevada rancher locked in an increasingly tense land dispute with the federal government, is shown being shot with a taser and threatened by police dogs.
The confrontation took place Wednesday and was caught on video by Bundy supporters and relatives who got into an aggressive- and at times violent- face off with the officers.