mimo - don't find your question at all confrontational; unlike pd's 4:32 post which I do !
I am so, so, so not an expert on contemporary Israeli life, but to address your point... firstly, Israel is a melting pot of different religions. This presents its own challenges. Secondly, re: Jews in Israel, there are Jews from all over the world there - of varying colour, degrees of observancy, nationality etc. and this can give rise to conflict too.
In the same way that not all 'Londoners' have much in common (aside from living in London), sometimes Jews in Israel can have little apart from their religion in common, and even this 'common thread' can be wildly different - one person might be very very orthodox another more or less completely 'lapsed'.
Re: differential treatment. I don't know about that. I imagine, like in any country there are those who are predjudiced against those who are 'new'. With the collapse of communism, there has been considerable immigration into Israel by Russia and my understanding is that they are sometimes tarnished with accusations of having brought in corruption or mafia-like aspects to Israeli life. How much of this is true and how much of this is racist / nationalist rubbish I have absolutely no idea. I imagine similar sentiments to 'Eastern Europeans steal British jobs' type stuff can be seen over there but with an Israeli twist !
hth.
PS - It is a totally amazing country to visit for people of any religion. There are many utterly ancient and incredible sights to explore and learn about; it would make an unforgettable holiday !