John Hindsill,
You are absolutely correct.
I hate to say it, but I have become convinced, that those people you're referring to have a specific anti-Israel agenda. Also, tragically, in the last number of years, we have often seen plain old fashioned anti-Semitism try for legitimacy masquerading as anti-Zionism.
I make this comment as a long-time and very active member of American Friends of Peace Now, the principal American organization involved in supporting and promoting peace between Israel and the Palestinians, an organization that has long been in the vanguard of supporting a Palestinian state in the occupied territories.