What needs to be taught about them is how many serial killers come from this group. How many of this group are infected with diseases ranging from relatively minor STDs up to Hepatitis C and AIDS. How many of this group molest children. How many of this group die from suicide.
If they tell the truth about these people, children will be properly inspired to shun and avoid these dangerous mentally ill people.
That's because we eeevil Normals are so mean to them!