I don't know what criteria news outlets use for listing headlines - if it was me making the decision then this would be headline news. I will say though that the BBC definitely does not have a right wing agenda, far from it. There was a news story a few days ago where a young 12 year old boy was badly beaten up by Asian thugs in Bradford and that hardly registered either. This for me was a brutal, sickening racially motivated attack and should have been headline news; why it wasn't I don't know but I don't believe it was anything to do with a political bias.
A lot of news relating to the actions of extremists on both sides of the divide are not being broadcast. You only have to look at You Tube, and see the rankings and threats from both Islamics and Fascists.