The fact is that the Russians in Israel are not the most well to do citizens. At best, they are middle class (except for some tycoons who imported their wealth from Russia). Why would Lieberman object to changes in the tax code designed to help the middle class? Very strange, but here is a plausible answer: Lieberman believes every one can become rich like himself. The basic flaw in this thinking for regular Israelis: People tend to be law abiding, unlike Russians who were trained to steal from and cheat the state. Also, not everyone knows influential tycoons worldwide who might help in getting business opportunities. Another Lieberman mistake is calling the social demonstrators "shouters for hire". People don't do that in the West, because the pay is too little. In the USSR, there was no pay but the regime forced people to go out and demonstrate. It is not easy to change your culture and way of thinking. On the other hand, it is much tougher for the regular citizens to absorb such immigrants.
Israeli teen lightly wounded from stone throwing in West Bank settlement of Kiryat Arba (Haaretz)
from the article: Netanyahu fails to amass cabinet backing for Trajtenberg report