Bowe Berdahl’s dad has been viewed with suspicion and derision, in part because of the beard he grew in “solidarity” with his son in captivity. But beards have long raised eyebrows in polite society.Bowe Berdahl’s dad has been viewed with suspicion and derision, in part because of the beard he grew in “solidarity” with his son in captivity. But beards have long raised eyebrows in polite society.