 With many different reasons why ELF activists carry out economic sabotage, a communique to the press claiming the responsibility for arson against urban sprawl in December 2000, described the reason a cell took an action.As Elves usually do, they claimed that burning down the house was non-violent because it was searched for any living creatures; an issue which is much debated within the environmental movement.Some of the most common and notable attacks are against the development of multimillion-dollar houses, a frequent target in the ELF campaign.