And even a thousand refugees make a visible difference. Of course i wont support this wild demonstrations, but this is because of the inability of the government to deal with the issue. Jews are already in a state of mind being threatened with change of demographics, Iran and countless terrorist groups. So a social uprest against foreigners is some what expected.
High school teacher's union threatens strike (Haaretz)
from the article: Demonstrators attack African migrants in south Tel Aviv