That's often very true, but Schulz was asked by his readership "Hey, why no black kids?"
So he responded with Franklin. And this WAS in the sixties.
I think America, while still yet under segregation for the most part, is still slow to integrate fully. You see a lot more integration in urban areas, where people concentrate, while rural areas and the suburbs are still ...[text shortened]... re, Miss D. The road IS long, with setbacks along the way (Donald Trump), but we are getting there.
"People will write based on what they know."
In general, writers should stick to writing about what they know.
An American writer who happens (not necessarily by choice) to have grown up in
a completely white world would know white people much better than other people.
So if that writer attempts to write (as perhaps commissioned by one's white boss)
about, say, a Japanese immigrant community in Hawaii, then, being unfamiliar with
that reality, one will fall back upon popular ignorant stereotypes, often wildly inaccurate.
There was an Australian television series about a white (of course) detective (the hero) in Singapore.
It assumed that in 1960s Singapore, every Chinese (the ethnic majority) would have
spoken Mandarin all the time when, in fact, they usually would have spoken other dialects.
On another note, there was a proposed miniseries about Billy Sing, who's widely
considered the greatest (at least the most famous) sniper in Australian military history.
In real life, Billy Sing was the son of a Chinese father and a white English mother.
The show intended to make the Sing family completely white. The producer
disingenuously claimed that since Billy Sing was a national hero, it should not matter
what his 'race' was, so why not make him white to appeal more to a white audience?
How would people feel about the whitewashing of a black war hero?
Billy Sing was acclaimed as the greatest Allied sniper in the Gallipoli campaign.
Afterward in France, however, he was seriously wounded, including by poison gas.
Although he was officially 'cured', circumstantial evidence suggests that he never
fully recovered from his war wounds. Before the war, he was a professional hunter,
going out alone in the bush to track animals, shoot them, and sell their meat and hides.
After the war, suffering from chronic health problems, he was unable to do that work as easily.
At that time, the concept of PTSD was unknown, and he received no compensation for disability.
As a proud man, he would have been reluctant or unwilling to claim disability in the first place.
Some well-connected war heroes were able to find cushy jobs where they could
get a regular paycheck without having to do much, if any, work, but being non-white,
Billy Sing found it harder to use any connections. Many years after the war, an
old friend from the war met him by chance and was shocked by his appearance--it
seemed that he might not have eaten for days. His friend offered to buy dinner,
but Billy Sing would not accept charity. He died alone in poverty. It was not until
much later that other people began to regret that nothing was done to help him.