Israel has no constitution so its political structures have developed from tradition more than a rigid legal architecture. Part of that is a supreme court that is comprised of jurists who have the power to rule against government actions, laws, and even executive appointments of ministers. IOW, they have a potential veto on ANY decision by a sitting elected government.
The rub? That court's members never face election. They are appointed by other jurists. The people have no power whatever to regulate that court or hold it accountable. It has evolved into a bench almost totally comprised of members of the political Left.
Netanyahu's coalition wants to make that court accountable to the voters and break its deadlock of power over elected governments. So, when you hear the Left in Israel screaming that their "democracy" is being destroyed, just remember that the Left is just as vicious and corrupt there as it is here. The global Left has become EVIL. There is a huge majority in Israel that is cheering FOR the changes because they are sick of their votes being meaningless due to this unelected veto the Left has. They've gone so far as to threaten civil war.