If you are asking for a devil’s advocate argument, we could start with the fact that the Jews weren’t exactly known for detaining, torturing, and mass executing their own.
You also have the fact that the Jews didn’t torture and kill hundreds of German civilians including women and infants to kick off a retaliation.
While I think Likud show a disguising disregard for civilian life and suspect a number of their party would like to carry out a one sided genocide, I also think the “it’s the same thing as the Holocaust” is a pretty gross statement.
It’s also probably prudent to not jump to conclusions in what’s actually taking place during the fog of war. I strongly suspect Israel is committing war crimes under the current administration, but I also remember the 2008 Goldstone report where they were accused of doing so after not participating in the process at all and then years later the person spearheading that inquiry said that had they known at the time the information they learned since, they would have had a different position towards the Israeli operations.
Time has a way of revealing a lot of details that are lost in the moment, there’s probably unprecedented propaganda on both sides of this conflict, and while we should err on the side of humanitarian concerns in directing foreign policy and negotiations, the process of investigating allegations is extremely important.
But to be frank, the knee jerk “this is identical to Nazi Germany killing the Jews” is ignorant as shit. You can’t just ignore the existence of Hamas and the fact it controls the region with its own war crimes (which, as has been the case for ISIS/ISIL and al-Queda, are often directed at their own dissidents with greater scope and violence than foreigners).