As almost always happens with this kind of thing, you were not banned for posting the story, you were banned for being an asshole. Your post of the story is still up, and look at all the places it's being crossposted.
Put it in a different light: Country X puts someone to death because they kissed a person of the same gender in public or something. Everyone on Lemmy thinks that's incredibly fucked up, they start posting stories about it.
And then someone comes in and starts yelling about how that country and its authorities are backwards medieval idiots, and attacking anyone who tries to say anything different. Then they get banned. Which gives them a handy opening to start yelling in all directions about how the moderators are anti-queer horrible people who are trying to censor the truth about how repressive this particular government is.
No one said "violent racist idiots." Everyone said this is a bad thing. I have no idea the truth about the original issue, if the people were involved in property damage or not (and honestly I don't care either way, they shouldn't have been deported before a conviction and probably not after one even if so). But you were banned for being a twat about it and calling other people in the thread "pro-genocide" and "defending fascism" and "racist idiots."
I suspect some people do this on purpose, so they can proceed to pitch a fit about it here, and feed into the narrative that anyone at all on Lemmy is pro-genocide, so they can paint themselves as the rare voices in the wilderness who are anti-genocide and generally sow mudslinging among people to no purpose. YDI. Don't be a twat in the comments and you won't have these types of issues.