It's interesting, isn't it, how the paper that one reads is, for some people, an instant indicator of one's views.
My father, who, for most of his life read The Guardian, (like me) switched to The Telegraph in his 60s. Why? Because it was cheaper. He didn't change his views and wasn't influenced by its political stance, but he was much better informed about court reports.
My husband gets apoplectic about the DM while never reading it, but I read it online, and I can see the attraction. It's very well designed and, actually, engagingly written. The bias seems to come from two aspects. Firstly, the choice of some non-stories such as the one highlighted above, and secondly the provocative headlines and sub heads. When I compare the actual information between the the G and DM there really isn't very much. (I'm ignoring the nonsense down the right hand bar.)
And, reading it does make it easier to pick up on some of the scandals that the others are too high minded to report but refer to in oblique terms.
I have on occasion written to the Guardian complaining about the number of their articles which use DM articles as a hook for one of their responses. They don't respond.