Fighting Occupation with Oppression?

As an Israeli who believes in the right of Palestine to self-determination and the need to end Israeli occupation - what should I think about the way Palestinians are handling human rights and that's effect on the political struggle?

First, I want to put one thing aside - many people talk about human rights (especially and their implementation in the Muslim world) and actually mean Western concepts of human rights. Some of those who protest against the Muslim practice of women veiling themselves in public often fail to see that the Western concepts of women sexuality tend to be as objectifying and may be as oppressive towards those who suffer from them.
But even being aware of my (and everyone's) tendency of conflating what I know and what is proper, there's an inherit problem with supporting a national aspiration of a social-national group that does not believe in personal freedom.

Those who are familiar with political activism in Israel-Palestine have probably heard of Sheikh Jarrah neighborhood in East Jerusalem. I've written a little about the legal/political situation that is the source of the legal and political disputes of ownership in that part of Jerusalem (here) but did not mention the weekly demonstrations taking place in the neighborhood. These demonstrations are organized by a joint Israeli-Palestinian private initiative, that involves left-wing Israelis (who are mostly secular Jews) and the local residents of the neighborhood (who are mainly religious Muslims). Lately, the organizers of these demonstrations have issued a request addressed at the Jewish women-protesters to show-up at the demonstrations only in clothes that would respect the local traditional population - no short trousers, no tank-tops (here, in Hebrew). Apparently, the Palestinian women who took part in the demonstrations did not feel comfortable being associated with women who are immodest according to the rules of their own culture. What's more of a problem, as it turns out, is that Muslim young men see such 'immodest' clothes as an invitation to sexual harassment of the Israeli participants in the struggle (here, in Hebrew, is an opening to the many blog entries about the subject).

By giving this example I'm trying to avoid the problem of conflating Western concepts with human rights concepts. This is not about Muslim society controlling the dress code within its borders, but a clear declaration across the board that even the women who do not adhere to Muslim values must follow Muslim modesty codes - not only when they visit East Jerusalem as tourists but when they are there on a mission of joining in with local population of fighting for what is just.
Can a women, a gay person, or any liberal person fight for a just national cause at the expense of her/his personal freedom? On one hand, those sensitive to oppression should be the first to fight it when it burdens others. On the other hand, the oppressed can be just as oppressing towards other, weaker populations. Demanding those women who do not believe in the need to cover their arms to do so when they arrive at East Jerusalem is an oppressive act merely because it enforces cultural practices on those who are not members of the relevant cultural group. It is, in a sense, a cultural occupation of the neighborhood, perhaps in response to the actual Israeli occupation. I do not claim that one is as bad as the other although, if the claim that Israeli protesters are being sexually harassed in demonstrations is true - we're getting pretty close. I'm willing to assume that not every occupation is the same and that, as some say, it is wise to finish fighting one before fighting the other. But as a supporter of liberty in all forms - what can be my excuse of ignoring one kind of oppression while I'm fighting the other?