A moderator marked my answer as controversial (note: it is no longer marked that way). I don't understand why it was marked as such. The answer explains how Hamas can build rockets despite Gaza being blockaded by Israel. It's simply not that hard if your rockets are very bad. The answer's main source is a book and an interview by the American political scientist Norman Finkelstein. The facts and figures presented by Finkelstein are well-referenced and has not been challenged.
I think it is unfair for moderators to mark certain answers as controversial. Essentially it marks the answer as "dubious", "based on unreliable sources", or "opinionated". Moderators shouldn't take sides.