When being pro-Palestinian means the erasure of the state of Israel and Jewish presence in the land, it sure as hell is antisemitism. When it means coming to a difficult but necessary acceptance of the fact that either the land needs to be divided OR making a genuine case to Israeli Jews that a one state system will not mean their destruction then it is not antisemitic. The Palestinian national movement has failed on both accounts and the Islamist version under Hamas has made their vision of Jewish life in the land of Israel very clear.