Context: The use of animal fur in clothing dates to prehistoric times. It is currently associated in developed countries with expensive, designer clothing, although fur is still used by indigenous people in arctic zones and higher elevations for its warmth and protection. Once uncontroversial, it has recently been the focus of campaigns on the grounds that campaigners consider it cruel and unnecessary. PETA, along with other animal rights and animal liberation groups have called attention to fur farming and other practices they consider cruel.

Question: What have humans used for clothing since prehistoric times?
Answer: animal fur

Question: Indigenous people in what zones use fur for warmth and protection?
Answer: arctic

Question: Using animal fur as clothing was once considered what?
Answer: uncontroversial

Question: Who considers animal fur to be cruel and unnecessary?
Answer: campaigners

Question: What's the four letter name of an animal liberation group?
Answer: PETA

Question: What has not been used for clothing since prehistoric times?
Answer: Unanswerable

Question: Indigenous people in the tropics use for for what?
Answer: Unanswerable

Question: Using what for clothing has always been controversial?
Answer: Unanswerable

Question: Who consider animal first to be necessary
Answer: Unanswerable