Children grow in stages in terms of physical, intellectual, and social development.  They are able to properly comprehend ideas and concepts at different points of the maturation cycle.

Thus, keeping age sensitive materials availability in tune with the developmental processes is a rational way to proceed.  Activists try to blend this age appropriate filter as ‘censorship’ when in fact it just a notion tied to the very real idea of stages of child development.

Why would the activist Left want to expose children to age inappropriate and destabilizing literature?