American Jewish support for Israel seems to be dropping if you look at numbers attending the Israel Day Parade in New York:
2012 -- 35,000 marchers -- predominately Orthodox Jews. Haaretz:
In 2002, an estimated 750,000 spectators came to watch 100,000 marchers.
These days the parade, which last year changed its name to the Celebrate Israel Parade from the Salute to Israel Parade, draws much smaller numbers. It also has grown increasingly Orthodox over the years; most of the marchers are children from area day schools.
1977: 75,000 marchers -- cross-sectional parade. (New York Times)