Speaking as a Jew who's been around quite a few zionist organizations, Israeli politics and rhetoric has taken a terrifying turn. For starters, the ascension of the Jewish Home party, particularly the installation of Ayelet Shaked as Justice Minister, signals an openness to genocide which hasn't happened before. (http://jonathanturley.org/2014/07/17/the…
You can also check out concerns coming from Israeli groups documenting human rights abuses.
B'Tselem is a good resource to get started with:
Breaking the Silence has testimony of human rights abuses by the IDF spoken about by IDF soldiers:
It's not anti-semitic or gay-hating to hold Israel accountable for the current state of affairs. A non-violent solution is needed and that solution is BDS (boycott, divest, and sanction). I want Israel to exist in peace and security, but that can't happen without international pressure.
I tweeted Ed Murray and messaged his office to drop out of the event and, if you agree, you should too.