I think this idea adults have of children being innocent of any evil and not telling them about the Titanic because it may frighten them, is absurd.
I was born during the war, so all we had in the way of media was the radio and newspapers, but I can remember of being very aware of unpleasant things happening in the wider world by the time I started school.
When I was about 9, we lived in Singapore, the local paper was running a serial about the Japanese occupation of Singapore and Malaya and all the, truly dreadful things that happened to European prisoners of war and European families, or anyone else who opposed the Japanese.
My mother, like many people here tried to keep the paper and these articles from me, waste of time, I always read everything that anyone wanted to hide from me. Yes, the stories were horrible, man's inhumanity to man at its worst, but I already knew about these things, not the detail, but the story. It was only 8 years since the war had ended.
What scared me was not reality, but fiction. The mad woman in Jane Eyre, Mr Rochester's first wife gave me nightmares, as did Witchwood by John Buchan.
My DS was reduced to tears by a Noddy book, because the story was unfair to a new character who disobeyed rules because he didn't know they existed.