 The vandalism included spiking trees as well as targeting anglers.However, it wasn't until sometime later, in the United States, that a joint claim of responsibility was made.Molland also writes that the first established ALF and ELF action was established on March 14, 1997, when the "" Animal Liberation Front – Eco-Animal Defense Unit"" claimed the spiking of 47 trees in a clearcut area, Oregon.