As one of elsewhere administrators you should consider the sensitivity of usage of sacred religion symbols. Just leave the Cross, the Crescent, the Star of David, and related symbols out of our discussion.
Your use of the blog post on Israeli Human Rights Violations is, how do I say this delicately? Overuse or exploitation, even abuse, but I'm afraid Israel is not the victim in this case, it's the burning issue in your life which is being eroded; it's a pity, isn't it ? ...
No Laurent, it has nothing to do with the Israeli-Palestinian conflict, nor with the freedom of speech. These are general norms of free dialogue between people in public space; you are more than welcome to check it throughout the entire net. No doubt you'll find out that in more than 90% of social networks you have to respect the norms.
I understand your point of view.
In general - I guess reactions have a different color and scent to different crowds and people. I think the key to the hearts of people is respect of their point of view, even if the one who criticizes them does not agree with their view.