Definition of Omnivore: consummation of both plant and animal matter such that the body is not physiologically-damaged by it.
Definition of Scavenger: An organism that feeds on dead organic matter.
Being a Biology student in a State University, I have access to the entire Biology department's doctors at my will (muahahaha!) should I ever have a curious...err, inquiry. Quite a few of them classify the species Homo sapiens as both Omnivores and Scavengers, and they attribute it to modern society. Most of the people on the planet live such that they obtain their food from different branches of society--they prepare and package the food for us and we, in turn, cook and eat it. In fact, it is because most of us are so dependent upon private organizations to prepare food for us that Tyson and Monsanto have billions of dollars of revenue and stock. Because people of this population have the meat (in particular) prepared and packaged dead (thank the lords and ladies this remains true), quite a few doctors are insistent upon further classifying us as both omnivores and scavengers.
The select few that hunt, catch, and grow their own food do not get this extra classification, albeit they're not completely free from dependency on private organizations sometimes.
I don't think that's accurate at all. If we're just going by who does what, then it's not a species thing at all. It's cultural, so let the anthropologists decide. That we're omnivores is inarguable - scavenging is a behavior, not biological. You would define it primarily upon what the majority of the species does, but we 'became' this way due to agriculture and technological development.
In short, I wouldn't classify the species homo sapiens as scavengers. We've played every role out there at one time or another and still do.
