Human nature is malleable, and depends on the material conditions we find ourselves in. People are not inherently vicious, though we all have the capacity to be.

crimes committed by people around me are completely the same as the hypothetical crimes people around you would've committed if we lived in a different reality, so you shouldn't criticise me and hurt my feelings. Also, don't ask why my people are still committing war crimes. Its all justified.

You people can't be serious

"This mass-murderer told me that everyone is actually just as bad as him. Why would he lie?"

No, and if hypothetically your false assumption was correct and my country did something similar then i would distance myself from it