No one in their right mind goes out and stabs their flatmate and a random 70 year old passerby, not even a wanna be terrorist. The deeply racist UK juridical system is not a good reference for deciding this.

And I am not here to do research for you, but if you spend even 5 minutes googling you will easily find that right-wing politically movitated violet crime easily dwarfs those figures (despite systematic under reporting of those by the police).

And while you are at it, look up domestic violence figures which are also orders of magnitude higher, even if you just count the ones with deaths or serious injuries.