In Australia, fans complained of ticket scalping and scalpers re-selling for high prices. Back-lay sports arbitrage is often called "scalping" or "trading". Scalping was originally referred to as spread trading. Players can also scalp a dying enemy with a scalping knife. Price action gives extremely short term trade ideas, often more suited to scalping. Most of these remains showed signs of ritual mutilation, particularly scalping. The Americans pursued them, killing and scalping several Native stragglers along the way. He found what he was looking for in killing and scalping Indians. The French and Indians did not pursue and were engaged with looting and scalping. They rushed into their camp, killing and scalping two of the murderers. He won approval by killing and scalping his first enemy. In many cases, tickets were limited to two per person to deter scalping. It has also been practiced along with headhunting and scalping to display war trophies. Some scalping incidents even occurred during the American Civil War. It also was criticized for being a reference to the former practice of scalping.