I see what you mean, thanks. Maybe of interest, the Oxford English dictionary defines a race riot as “a public outbreak of violence due to racial antagonism”, much less specific than your definition which I imagine is America-based, so I think this might be a difference between American and European use of the term.

Why do you think it’s more fascist or than racist? The political “right” of the UK is incredibly anti-immigrant, you can see that in how they’ve voted for MPs and Brexit. The racial hate is more noticeable towards brown people, i.e. anyone looking anything from Arab to south Asian, there’s even the p-word that comes close (but isnt quite) the equivalent of the n-word.