The thing is that no news can be unbiased - it's not possible. Even if two people witnessed the same thing, there is a good chance that they would report it differently. Neither would be lying - they would just each see things that the other missed, and their own life experiences would make them feel differently about what had happened.
On a board like this, if we are talking about a news report, we are already getting the information second hand via a journalist, who will inevitably have put a political spin on it. The OP will comment on the report with her own take on the story, and every subsequent post will add a different one.
Unless the OP is just 'Have you seen this story?' with a link to the site, and the replies are all 'yes', 'no', or 'I'm off to see', there will be political comment, whether the post is about a politician or an event.