“Zionism” as a term has a very different usage in Israel and indeed across the Middle East than it does in the United States. 

Outside of a handful of specialty organizations like the Zionist Organization of America (ZOA), 
the term “Zionist” or “Zionism” is almost always used as a pejorative in the US, 
normally in the context of conspiratorial beliefs about Jewish influence.

In Israel, and indeed across most of the planet, Zionism is by contrast referring 
to the specific ethno-religo-centric political philosophy the state of Israel is based upon. 

Most of Israel’s political parties are explicitly Zionist, while a handful of smaller parties are explicitly anti-Zionist.