Have I used the question mark properly?

I'm writing an essay about the story, "The man who was almost a man". It was written By Richard Wright. In my introduction, I have some lines that have questionable grammer.

Here it comes
Introduction:
It’s hard to tell who was a victim in the story. Was it Dave Saunders, the young man? Mr. Hawkins, who had his mule shot? Was it Dave’s family, who lost their son over a stupid incident that could have been prevented? Will it be society? After thinking about it for a while, I’d have to conclude that it was Dave. He was a young naïve boy, who thought that owning a gun would be the thing he needed to be a man.

Is this the proper use of question marks? Any help will be appreciated.