I tried to post this as a comment, but got a 'too long' message.
As pointed out by @axsvl77, we have had a lot of these questions, one repeated the same question over and over for about a week, and just waited to engage anyone who would comment. Patterns begin to emerge after a while. Questions often try to debate the different casualty figures, or the logistics of gas production or train transport, or cost involved. We have seen these so many times that response for some of us is almost 'knee jerk' to flag and close. If you think something is legit, don't downvote it, answer it, or at least research it first. You may find if you try to google these topics, they will lead to hate sites. That's your biggest hint.
As to downvoting sensitive topics, you might note the current Holocaust question on children, which didn't get closed(yet), because it was written so as to define the issue; where the question arises from and why its confusing. How the question is written is key. If a legit question arises, this group in general is usually capable of discerning it. And equally capable of sniffing out the Trolls.
If you do feel we are being unfair in closing something, absolutely bring attention to it, debate it, do your own research, comment on or answer the question. That's how the system works best. But we do still have to deal with Trolls and bad questions and answers, so the 'be nice' philosophy does have to have its limits, and down votes, flags and closes will have to happen in some cases.