If you feel like the submission feed and/or the moderation decisions on top of it are biased, all I can tell you is that everyone feels that way, especially on any topic they are passionate about. You needn't look far for examples of commenters complaining that we're suppressing and censoring the Gaza story - there are some in this thread.
What I feel a lot more confident talking about, in terms of balanced moderation, is the comments. We've moderated, warned, and banned many accounts for breaking the site guidelines while posting anti-Israeli (and sometimes even anti-semitic) comments, and we'll continue to do that. That's something we take very seriously, and of course, we do the same the other way round as well.