and were deeply suspicious of other Christians, including those of the Catholic, Quaker, Anglican and Baptist denominations. The Pilgrims viewed the black cat as a companion, or a familiar to witches, who were said to "use black cats as an integral part of their craft". These superstitions led people to kill black cats. There is no evidence from England of regular large-scale massacres of "Satanic" cats, or of burning them in midsummer bonfires, as sometimes occurred elsewhere in Europe. In the present day many Westerners, including Christian clergy, have black cats as pets, and very few people attach superstitions to them anymore. In contrast, the supernatural powers ascribed to black cats were sometimes viewed positively; for example, sailors considering a "ship's cat" would want a black one because it would bring good luck. Sometimes, fishermen's wives would keep black cats at home too, in the hope that they would be able to use their influence to protect their husbands at sea. In the folklore of Chiloé of southern Chile, black cats are an important element that is needed when hunting for the treasure of the carbunclo. In the early days of television in the United States, many stations located on VHF channel 13 used a black cat as a mascot in order to make sport of being located on an "unlucky" channel number. Anarcho-syndicalism Since the 1880s, the color black has been associated with anarchism. The black cat, in an alert, fighting stance was later adopted as an anarchist symbol. More specifically, the black cat—often called the "sab cat" or "sabo-tabby"—is associated with anarcho-syndicalism, a branch of anarchism that focuses on labor organizing, including the use of wildcat strikes. In testimony before the court in a 1918 trial of Industrial Workers of the World leaders, Ralph Chaplin, who is generally credited with creating the IWW's black cat symbol, stated that the black cat "was commonly used by the boys as representing the idea of sabotage. The idea being to frighten the employer by the mention of the name sabotage, or by putting a black cat somewhere around. You know if you saw a black cat go across your path you would think, if you were superstitious, you are going to have a little bad luck. The idea of sabotage is to use a little black cat on the boss." Space Shuttle program When the Space Shuttle program naming system for