There's no need for them because they already have a local rhetoric that Palestinians are all the same, and because the USA will continue to back their actions with very little consequences.

ie they're evil and they don't care about PR lol.

Nazi Germany made it abundantly clear that they were some superhuman white race. They didn't care if it didn't make sense or try to hide it.

I get your logic, but it doesn't really apply to genocidal regimes. You can even look at recent events, like the bosnian genocide which was only 30 years ago. Serbia didn't hide its actions at all, it was pretty proud of showing off how they were rounding up and massacaring Bosnians.

A similar thing happened then too in that the UN put a blockade on Serbia, but UK+France told the USA not to get invovled in helping Bosnia because the genocide benefited the christian people (no i'm not making this up, it was some really next level of sick you can read about see:factions)