You can clearly see the bias. Apparently arab or somali= terrorist and cadaan committing the same act is labelled mentally ill. Luckily the police got there before he could stab anyone.
https://metro.co.uk/2018/11/11/man-waving-samurai-sword-tasered-by-armed-police-8127097/
https://metro.co.uk/2018/11/11/man-waving-samurai-sword-tasered-by-armed-police-8127097/