there is no secretariat or no sea biscuit. they're wild, independent, rugged. the wild mustangs of the wild west. >> a cowboy will say the outside of a horse is good for the inside of a man. >> reporter: woven generations ago into the fabric of the land, they've become the focus of lawsuits even protests as far away as new york.horses are at the center of a tug of war between the u.s. government chasing them down with helicopters and animal rights groups who want it stopped. >> the roundups of the wild horses is a true holocaust of the animal world. we can't let one horse impact everybody else by taking all the feed, all the water, all the -- do damage to that habitat. >> reporter: the disagreement is