“Conservation is an important cause but it does not trump human rights, and it can never be a justification for violence. To be ethical and effective, it must work with, and not against, people on the ground.” (http://www.theecologist.org/blogs_and_comments/commentators/2987349/why_survival_international_has_made_a_formal_complaint_to_the_oecd_against_wwf.html)
Provided the people are on the ground by choice.