You can join the IDF and kill Gazans for sport evidently.

For some reason I feel I am going to be banned from this site with this question.

Question is fair enough, but your history is looking weird by now. Slightly paraphrased to illustrate the pattern:

What would a modern day instruction manual to create home-made explosives look like?

Is there any place on the web to brag about terrorist attacks? (deleted?)

Where is it legal to murder people?

Not sure. Criminalizing a way of thinking is a pretty dangerous thing to do, at least for a society that is based on freedom. So maybe there are other countries that are like, authoritarian where something like that may happen?

To my knowledge, the only place where promoting Nazi beliefs or imagery is illegal is in Germany, for obvious reasons.

That would be the slipperiest of the slopes. Anyone could get away with murder by just claiming the person was a nazi. Especially in this day and age it’s really difficult to find actual nazies. The supply is incredibly low compared to the demand which leads to people like Elon Musk being labeled as one which is absolutely ridiculous thing to say.

So you are promoting death and killing.