Not only are animals unable to avail themselves of language to assert their own rights, but many fewer humans have a clear sense of kinship with animals than have a clear sense of kinship with other humans. Among beings with subjective states of awareness, animals are the untouchable caste, those whom human others would rather not acknowledge, let alone render assistance.
Any man of energy and initiative can get what he wants out of life. But when initiative is crippled by legislation or by a tax system which denies him the right to receive a reasonable share of his earnings, then he will no longer exert himself and the country will be deprived of the energy on which its continued greatness depends.