In this task, you are given a public comment from online platforms. You are expected to classify the comment into two classes: obscene and non-obscene. A comment is obscene if it is considered offensive to the public sense of decency, for example because it too obviously relates to sex or contains language regarded as taboo in polite usage.

Comment: I hear ya, damn that horrible free market system!
Obscene

Comment: Are you saying only Nazis are anti-Semites?

"They do not threaten me, and I am happy to let them live"
"If somebody is swinging a knife in your direction - you're not just FEELING under threat, you ARE under threat"
Surely you must concede the word 'threaten' can be used in a context which does not imply physical violence. I was, quite rightly I feel, confused by your statement which said nothing about a knife.

But that then raises the question of how the Nazi (your term) physically threatened you by shouting, "Jews will not replace us!". Remember you are prepared to kill this person without there being any physical threat to you or anyone else. He is shouting - not swinging a knife.

The laws of self-defence are complex if that is what you are going to rely on for going about shooting people. As a self-defense teacher I have the obligation to warn you, you will need a good lawyer for a knife/gun case.

You keep raising more and more questions. What is an 'ethnic group'?
Non-obscene

Comment: You sound awfully scared you're going to lose your daddy figure.

Non-obscene