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.
I, of course, can't judge the intent or the effort. What I can say is that I read all captions of 150+ votes submission, rarely skipping any, and I saw 20+ pro-Palestine ones and zero pro-Israeli ones. I think this is quite objective measure.
At some point I thought it might be intentional but now I think it is just bias amplification: these submission are flagged too fast and upvoted too slow to get anywhere.
Thank you sincerely for your sacrifice, Dan. Whenever I have an urge to flame, I picture my impending comment as one more grain of sand speeding towards your cranium, and instead I step away from the keyboard.