A black street gang? Or a street gang? Is the race relevant here for you?
You linked to an article about a drill rapper and [alleged] gang leader. I was under the impression that drill rappers and their associated street gangs in London were predominately Black, as per this article;
19 London drill rappers who went too far and are now writing songs from prison.
The unapologetic sound, which began in Chicago, holds up a mirror to the harsh realities of street life for young Black men in London...
https://www.mylondon.news/news/uk-world-news/gallery/19-london-drill-rappers-who-28270353
Perhaps in future, the words Black and Black culture should be erased from certain newspaper comment, research and intervention in case they cause offence. Oh, and that goes for targeted funding as well - no point funding solutions to problems that don't exist.
In terms of the law, the lives of little white girls are as important as the lives of Black men.
Tell that to the dead man in your link - he was acquitted of murder himself - some months before he was then killed. He gave a 'no comment' interview after his arrest.
The point is that if one human attacks another human with an axe they were carrying around and then they are disarmed by the person they attacked and killed themselves
We have no reason to think the girl was going to attack anyone. For all we know, someone else gave her the weapons for safe keeping - the reason she had those weapons in the first place was not revealed.
You linked to someone who was killed in a struggle whilst they were out selling drugs and robbing someone on the street, and who had previously been implicated in the murder of a 17-year-old. I can't see any reason to compare the dead man with the girl. Perhaps you should choose better examples.