Quick Fix for Housing Shortage
There are undoubtedly hardships finding affordable housing in Israel. This combines with high food and other living expenses, and relatively low salaries.
In a 2011 survey (http://www.citymayors.com/features/cost_survey.html) of the cost of living in international cities, for example, Tel Aviv, is ranked #24, which makes it the most expensive city to live in in the Middle East.
3. Illegal immigrants from Sudan and other African countries, have recently taken up mass-residence in Israel, mainly in South Tel Aviv. Ben-Ari (who has set up a liaison office in South Tel Aviv to focus on this issue) estimates they occupy 15,000 housing units. Expelling these illegal immigrant workers would therefore free-up those units for Israeli citizens.
There is currently debate in the Ben-Ari camp, whether to therefore link hands with the social justice demonstrators, to find common cause.