Would a parent be right to restrict their childs content under this circumstance?

The following is NOT based on personal experience.It is strictly a hypothetical situation.Suppose a parent has a child-I suppose male or female doesnt matter-who is around 13-14 yrs.old.The child is unusually bright and is extremely interested in politics and world affairs,to the point where they stay informed of such things to a far greater degree than most kids their age would.Now suppose that this child found the current state of affairs upsetting and it was causing the child to have undue stress and anxiety.Under these circumstances,would it be appropriate for the parent to forbid the child from reading or watching any media that was politically oriented;in effect "banning"the child from such topics?