When you buy a hamburger, whether you like it or not, it came from an animal. That meat was a life. Every hamburger was once a fuzzy, cute calf, which had to be reared, slaughtered, and delivered to your car window.
Recently there have been uproars over the "contamination" of ground beef with an additive, whether you wish to call it Pink Slime or BLBT (boneless beef trimmings) depends on your perspective. This is not breaking news. The use of this additive has been well known since at least 2002. This is simply the first time it has been vilified.
I have not been surprised by the public outrage over the issue, just annoyed by it.