They're prohibited from challenging Israel's Jewish character. Arabs can't demand equal rights, privileges and justice.
Zionist extremism is policy. Jews alone are served. Israeli Arabs are marginalized and denied. They're considered fifth column threats.
Knesset seats are assigned proportionately according to each party's percentage of votes gotten. A minimum 2% is required to get any.
Israel's Basic Law states:
"The Knesset is the house of representatives (the parliament) of the State of Israel, in which the full range of current opinions are represented."
Israel has separate executive and judicial branches. Knesset members (MKs) supervise "the work of the Government through its committees and the work of the plenum."
"The Knesset has several quasi-judicial functions, which include the power to lift the immunity of its members, and the power to have the President of the State and State Comptroller removed."
"The Knesset also has an elective function through which several public officials are elected."
"Once every seven years, the Knesset elects the President of the State and the State Comptroller."