Imagine that a gang of white men had run amok, attacking Muslims because they weren't white Christians. How much coverage would the BBC afford this news? I predict that it would be headline news, the usual talking heads would be decrying Islamophobia and racism and Brexit would of course be being blamed.
However when it's Muslims attacking people for not being Muslims, the BBC ignore the news.
You can read the article in many news outlets, here's a link to the Manchester Evening News
http://www.manchestereveningnews.co.uk/news/greater-manchester-news/bolton-muslim-gang-liverpool-rampage-13392870 but not on the institutionally pro Islam BBC.
Bias by omission is as bad as bias of commission.
Here's Paul Joseph Watson with his trenchant opinion on this matter...