When is it ok to remove a child from her or his birth family?

When is it ok to remove a child from her or his birth family?
“Children have the right to be protected from all types of violence, abuse and neglect. But children also have the right not to be separated from their parents against their will, except when the competent authorities determine that such separation is necessary for the best interests of the child,” Olga Borzova (Russia, NR) says in her report, adopted yesterday by PACE's Committee on Social Affairs, Health and Sustainable Development.

Interview following Ms Olga BORZOVA's, Russian Federation, Report to PACE, Parliamentary Assembly of the Council of Europe
January 26, 2015