If the heckling came from anybody but JVP, it would have been meaningful. JVP is a Jewish anti-Israel group that denies Israel's right to be a Jewish State and opposes all security measures taken by Israel to protect its citizens against terrorist attacks. They are NOT a legitimate part of the Jewish Community.
Two Turkish journalists jailed over Syria smuggling reports (AP)
from the article: Hecklers disrupt Netanyahu's speech at U.S. Jewish conference