For most of the pro-Israeli posters on this site, this conflict is existential not ideological

[madaboutharry]

3. It is true that the majority of Americans do not know Middle East history.

Most non-Jews do not understand the things you talked about in your post. They can’t understand because it is not their lived experience.

There have been painful threads here on DU in which there was lecturing to Jews on what is and what is not antisemitism. There have been threads insisting that “The river to the sea” is a perfectly ok thing to say.
Maybe your post can help a little by encouraging people to take a step back and think about what they are saying.

No one cheers the loss of civilians. That is always a tragedy. War is ugly. It is painful to see and all caring people feel that pain. The accusations that those who support Israel don’t care are unfounded and not true.
The constant barrage of inflammatory words like genocide, ethnic cleansing, and apartheid only serve to shut down respectful conversation.