I see what you're trying to say, but that's not really true. You could say, "2/3 of people would not say they thought it was a genocide," but that's not the same as saying, "2/3 do not believe it's genocide."
It's a small but important distinction. It's the equivalent of saying, "1/3 of people are religious, 1/3 of people are atheist, and 1/3 of people are agnostic," and then trying to say that means, "2/3 of people don't believe in God," instead of, "2/3 of people aren't religious."
I see what you're trying to say, but that's not really true. You could say, "2/3 of people would not say they thought it was a genocide," but that's not the same as saying, "2/3 do not believe it's genocide."
It's a small but important distinction. It's the equivalent of saying, "1/3 of people are religious, 1/3 of people are atheist, and 1/3 of people are agnostic," and then trying to say that means, "2/3 of people don't believe in God," instead of, "2/3 of people aren't religious."