Below are some articles on the London Bridge attacker, a convicted terrorist who was recently released from prison.  Apart from the first two by Breitbart, one struggles to find out the ethnicity of the attacker, and even that he is a terrorist. Interested readers can wander through these articles to see the generally selective coverage of most of them, at least as far as I am concerned. After that, definitely go to the last article here, to see my witty comments:
  https://www.breitbart.com/europe/2019/11/29/report-suspected-london-attacker-was-convicted-terrorist-recently-released-from-prison/
  https://www.foxnews.com/world/london-bridge-closed-by-british-police-amid-reports-of-gunshots
  https://www.washingtonexaminer.com/news/uk-police-clear-london-bridge-after-reports-of-gunshots
  https://www.dailymail.co.uk/news/article-7739057/Gun-shots-heard-London-Bridge-police-confirm-incident-area.html?ico=pushly-notifcation-small
  https://www.dailymail.co.uk/news/article-7739057/Gun-shots-heard-London-Bridge-police-confirm-incident-area.html?ico=pushly-notifcation-small
  https://www.dailymail.co.uk/news/article-7739939/Several-people-wounded-stabbing-shopping-street-Hague.html?ico=pushly-notifcation-small
  https://www.zerohedge.com/geopolitical/man-wielding-5-narwhal-tusk-helped-subdue-london-bridge-terrorist

     This is all I could find about how the knife attacker was stopped, namely by a bystander using a 5-foot narwhal tusk to subdue the knife man. I did not know that this was, so I researched it.
  https://oceanconservancy.org/blog/2019/03/08/exactly-narwhal-tusk/

     What this is, is actually a large spear-like tooth from a whale. It would be total overkill in the open environment of London Bridge against a knife, probably yet another cheap kitchen knife, rather some more expensive fighting knife, like the Wild West Bowie from Cold Steel.  Thus, I feel that citizens need to be able to carry spears and other medieval weapons, such as Viking swords, English long swords, and halberds, to deal with knife attackers, who are becoming ever bolder. Even a good baseball bat, or pick axe handle will work wonders. We all can’t have narwhal tusks!
  https://www.breitbart.com/europe/2019/11/29/london-bridge-attack-comes-knife-crime-up-80-percent/