Ethnic Purity supported by the Israeli left.

 Those of us who are more involved with the struggle in the Jerusalem, are recently being overwhelmed by repeated news coming from the eastern neighborhoods of Jerusalem.
Some of these neighborhoods has long well defined Jewish history (Silwan- Today has a Muslim Majority, in the past was known in Hebrew as Kfar Hashiloach, after the springs there that supplied Jerusalem with it's drinking water. The name was later diluted to "Siloan" or Silwan" by the foreign comers that occupied the place), some of these neighborhoods are relatively new but still has history of Jewish presence from before the establishment of Israel (Sheik Jarah- AKA the grave place of Simon Ha-Zadik).

In recent years, Jews started returning to their legally owned and purchased properties in those neighborhood. Some of the Jewish homes were occupied illegal and without paying rent by Arabs that were threatening the legal owners from getting closer their property.
Recently, a well orchestrated racist campaign is being raged against those Jewish residents. This violent campaign is organized logistically by different left wing groups and Anarchist groups while using the local Palestinian as the violent arm.
The Jews will be the organizers of the buses, the cameras, the signs and will orchestrate the media while the Arabs will be those who will carry out the stones throwing, the vandalism, the burning of cars and blocking of roads.

This whole shebang, wouldn't attract my attention at all at the way it did except that this struggle is to not allow Jewish legal owners to use their owed properties in an Arabic neighborhood, and only because they are Jews.

This sickening ethnic cleansing wouldn't have even hold on a week without the Jewish left wing organization complete devotion to it.
Those organization, with a Kazakh enthusiasm are carrying out an all inclusive war on those Jews just to keep these neighborhood Jew-Free. As it was for 40 years after the Arabs (before they identified themselves as Palestinians, back in the 30s, and 40s) violently scared the Jews away from their homes.

I was very curious to understand the Left wing Jewish narrative for this behavior, which promotes an exact opposite idea of what those liberal organizations are trying to make us think they believe in and I was even more bewildered.
I talked to a Jewish activist from those groups, a very articulate lady, that was just unable to explain me how opposing a Jewish presence in what was once a Jewish home goes with her belief that Jews and Arabs can live together in Tel Aviv, A well known Hebrew and Jewish city.
How come the Jews that wants to live in their home, despite the fact that it's in a predominantly Arab neighborhood, is being stoned and attacked while an Arab that decides to by a place in Tel Aviv, Carmiel, Afula or any other Jewish city, should be and is being welcomed?

Please offer me well educated suggestions for my question.

Thank you.