First you say it was right to do when RAF and 8th did bomb Dresden (which was filled by refugees and civilians) and thus kill 100000-250000 people in a firestorm.
Next you say it was wrong when Al-Quaida did kill few thousand Americans in a strike against WTC-towers.
Both cases were "act of war" or "act of terror" if you like to use that word.
If you say bombings of Dresden were acceptable then you should also admit attacks against WTC were also ok.
If America was organising, or supporting the Israelis in organising death camps for the extermination of the Palestinians I would say the WTC attacks were justified. They aren't, and they weren't.
Despite what Israel is doing, it is not a patch on what the Nazis did during the war.
The allies killed between 300,000 and 600,000 Germans during air raids.
The Germans killed 6,500,000 Jews, and an even larger number of Slavs. An average of around 8,000 a day, every single day of the war.
The true figure for Dresden, estimated at the time, since inflated by pacifists, communists (Dresden was in E Germany) and Nazi apologists (look, the Nazis were no worse than the allies), was around 35,000.
The initial reports of the Berlin and Dresden police chiefs both put the death toll at 18,000 confirmed (18K bodies were recovered by that time).
The Berlin police chief said he expected the true figure was around 25,000.
An officer responsible for recording the collection and disposal of bodies has said the final figure was 30,000 recovered.
The largest death toll in any other raid in Germany was 3.3% of the population of the city, which even if the population of Dresden was swollen to well over 1,000,000 would still indicate a figure of around 30-40,000.
Put into context, the allies killed up to 600,000 German civillians in air raids, the Germans over the same time murdered over 15,000,000 civillians, and would have carried on if not stopped.
For example, Kaltenbrunner sent an order to the commander of the Mathausen concentration camp in Austria in April 45:
Your quota is still 1000 Jews a day (to be killed)
The total number of German civillians killed in allied ai raids added up to around 1% of all deaths during WW2.
That doesn't strike me as out of proportion.