I found a page where you can see how they categorize websites, and sure enough, they place me under "hate":
I'm not the only pro-Israel site that is miscategorized as a hate site.
Israellycool, Israel Matzav and Abu Yehuda all get the same category:
Symantec's definition of a hate site is "Sites that promote hostility against particular individual or group on the basis of race, religion, color, gender, and origin."
There is definitely a campaign to impugn pro-Israel sites and stop people from reading them.
Symantec must review its categorization policies and stop assuming that reports of hate are accurate without performing their own impartial review. Otherwise the haters get the ability to censor.