Lacking the capacity to express yourself or even interpret your own anger is not the same as not being listened to.
There are plenty of elected representatives vocalising many of the same issues these people claim to be concerned about, so they can hardly claim not to be represented, or that their views are never discussed and talked about. Braverman, Patel, Farage, Anderson etc have all taken it upon themselves to have the supposed "difficult conversation" about immigration and cultural integration, and yet they are still very much the thin end of the wedge when it comes to popular opinion.
The fact that the majority don't agree with your viewpoint or share your concerns does not in any way excuse or explain resorting to riot and violence. I reject the notion entirely that far-right, racist, bigoted, and just plain old uneducated morons aren't "heard or listened to". On the contrary. They make a ton of noise, as do the people like Robinson/Yaxley-Lennon egging them on. Nigel Farage might as well be on the BBC payroll because he appears more often on their channels than most of their big salary employees. People have heard over and over what their supposed message is, and have largely rejected it. If you can not convince people with cogent argument, then that suggests your argument is less than cogent. Throwing a shitfit because the majority don't agree with you and are sick fed up of listening to you spouting ignorant bile is entirely on you.
If they are just grabbing on to race when race is clearly not the issue, then it begs the question what is at the root of their dissatisfaction. I don't think that's a particularly difficult question to answer, but what does appear to be impossible is figuring out how to get the disaffected to reach that conclusion by themselves. Unfortunately there is a point where education is not actually in the interest of the elite and ruling classes, and it serves to have a proportion of the "proles" living in ignorance. It certainly suits grifters and political opportunists, but they're not the ones who ultimately foot the bill for ignorance. No, it's ethnic minorities and the communities they live in.
I'm at the point whereby I think the government needs to give serious consideration to adding all far-right groups to the proscribed list purely to make it virtually impossible for anyone to consort with them openly, fund them, or permit them to gather in any way. And no, I'm generally against prohibiting protest and so on, but it's clear that this is nothing resembling a legitimate protest with legitimate aims, and is merely the product of far-right agitators stoking ignorance up to the point where it spills over into violence and riot, simply because they can't further their own argument using dialogue.