One day last month, animal welfare extremists followed the wife of a pharmaceutical company executive to her job, went into her car and stole a credit card to buy $20,000 in traveler's checks that they then donated to four charities. A Web site announcement boasting of the act included a more sinister threat: ``If we find out a dime of that money granted to those charities was taken back we will strip you bear (sic) and burn your (expletive). This is OUR insurance policy.'' The actions by the radical Animal Liberation Front appear to be the latest salvo in an...