Here, compare for yourself:
Let's start with the numbers.
In WW2, the Nazis in Germany and other European countries murdered HALF the Jews on this planet. Six million innocents.
In Gaza, the Palestinian population is steadily INcreasing. How can it be increasing if as you say, the situation is similar to Nazi Germany?
The Jews in Germany were law abiding citizens who worked and lived and intermarried with the Germans. They were not attacking the Germans.
The Palestinians in Gaza have, for seven years, been lobbing missiles into Israel and killing and maiming Israeli children. They are deliberately selecting hospitals and schools as targets - they freely admit this.
The Jews were rounded up and taken to the concentration camps along with JWs, gypsies, gays and anyone else who didn't fit the 'Aryan' ideal that Hitler had.
The Palestinians have total control of Gaza and have had for a number of years - they elected their own government, Hamas. The Hamas charter OPENLY calls for the total destruction of Israel. Hamas openly takes credit for every single suicide bombing it carries out in Israel.
The German Jews got no help from anyone outside Germany. They were tortured and starved and slaughtered in the camps. Those that tried to flee Germany found there was nowhere to flee TO - no other country would grant them sanctuary.
The Palestinian Authority has received BILLIONS from America and other countries. Hamas receives millions from many Arab states, such as Saudi Arabia, Iran and Syria.
The Germans built the concentration camps SPECIFICALLY to kill as many Jews as possible. They detailed this in the notes of some of their meetings and they kept meticulous records.
In Israel, any ill or wounded Palestinian children are taken to ISRAELI hospitals where they are cared for alongside Israeli children. The Israelis built schools and hospitals in Gaza - why didn't Egypt do that when SHE occupied Gaza, prior to 1967? There are no concentration camps in Israel. Israeli Arabs live as equal citizens; they vote and worship as they please. Arab politicians sit in the Israeli parliament.
There is no 'collective punishment' in Israel. When Hamas terrorists deliberately aim their missiles from civilians areas, aren't THEY the ones putting their own people at risk?
What would ANY OTHER COUNTRY do if attacked the way Israel is attacked? What would YOUR country do?
What happened in Germany was not 'punishment'. It was genocide.