Seriously, what Israel is doing today is no different from what the Nazis did before and at the beginning of World War II, extreme nationalism, illegal expansion, annexation of foreign territory claiming it historically belongs to them, propaganda using the latest technology, terrorizing neighbors, military at the center of society.
Zionism unlike the Nazis is not a threat to western democracy. They want a Jewish state in the Middle East, which is not part of the West. As long as the West is not involved, it usually does nothing or just some arms export bans on the countries and some sanctions on leaders. Currently that is happening in Sudan, which is about as bad as Gaza, but has really nothing to do with the West. There is nothing about it in the news at least in the West.
The real intressting part is more that the West is not sitting on the sitelines, but is somewhat aiding Israel. It obviously depends on the country and some do not do it at all. However even so, you see Western countries moving away from Israel. All but the US that is.