The real distinction is between intellectually dishonest criticism (Jews will be safe in one-state "solution", Jews are Nazis, there are new Jewish refugees), and honest criticism (Gaza War was mistake). If you actually believe what you say, the criticism is legitimate. If you express your views for tactical anti-Zionist reasons, its not. Thats the difference. Any questions?
Two Turkish journalists jailed over Syria smuggling reports (AP)
from the article: For Israel, 'delegitimization' is becoming an excuse