The holocaust was used as something with which it was somehow immoral to compare other genocides in the 00s. Thus as a tool to make those more acceptable, cause no ongoing genocide can be as bad as the holocaust, or so pro-Israeli organizations say.

That was its only role.

While the David&Goliath narrative in the 70s and 80s was used to make Israel infallible in public opinion, paving the path for Israeli intelligence widely penetrating western governments and structures.

But even this wouldn't be critical, if not for the West becoming more authoritarian gradually. Notice how the ruling structures in the West have been becoming less and less mobile, the key figures fewer and fewer, less and less transparent, and also older and older, and the concepts of right, law, constitutional law, common sense and natural right fuzzier and weaker, surrendering the reality to fallback mechanisms - as in raw power.

The less transparent a structure is, the easier it can be controlled by blackmail, personal interests and deals that the public wouldn't want if it knew about them.

Say, about USSR in the 80s - the stereotypic picture of it being some geriatric non-transparent bureacratic warmongering state with fascist policies and degrading society, - it's correct. The problem is - it just aged faster. The West was simply late by a couple decades. Those components of USSR's collapse were not conditioned by totalitarian communism in any way. Just in the West late boomers are in power, while USSR was ruled by the last pre-war generation.

Israel is just one symptom.

So this can't be solved by any conformism, arguing by the rules, proving things in courts, voting in elections. Only by bravery, strength and taking responsibility backed only by what you want and your own decision, no law, rule or vote.