As you say Goldie - exterminating 6 million people is genocide. This monstrous human rights violation having been carried through mostly by Germans with a lot of help from Romanians and Croats. So for this monstrous human rights violation in Europe land was taken away from Arabs and given to the Jews as some consolation - because it was the so called ''promised land'' (on the basis of them having lived there over 1,000 years previously). Unfortunately the Ottoman Empire had not kept adequate records of land ownership which proved the Palestinians as being the legitimate owners of all of what is now Israel and so the British and the Americans gave it all away. Thus starting a process which led to the Palestinians being an uprooted people scratching a living on refugee camps as stateless persons. Which led to Palestinians being treated as sub human in their own land. Unfortunately any criticism of this is automatically Anti Semitism. The creation of Israel was a mistake (and a land grab) - and it is not Anti Semitic to claim that.Hamas control Gaza and most definitely won't be content with anything but the destruction of Israel. So, even if Israel offered a two state solution, it would simply strengthen the hand of Hamas extremists to launch further attacks on the pared down Israel. The status quo is the best Israel can get.
And genocide is overstating the case. There is displacement for security reasons and, of course, that leads to injustices and human rights abuses. In Israeli assaults against Hamas and Islamic Jihad, casualties can be in the hundreds according to UN and Amnesty sources.
Exterminating 6 million people in gas chambers - that is genocide