Removing the apex predators from any eco-system is the first step to degradation of that system. The removal of the Grey Wolf left a gap in the dynamics of the western ecology that was quickly filled by coyotes for the most part, (which are remarkably resistant to the methods of control that originally killed off the Grey Wolves). But the coyotes are not equipped to control deer populations, and deer in some areas are now over populated. Think of it as a big sweater....You can't pull out any one thread without distorting the whole. The only offense the Grey Wolf (and a host of other apex predators) are guilty of is being in competition with humans for the land. It does not serve us well to think that we can make our own place in nature more secure or abundant by killing off the competition.