It's a reaction to the failure of centre-left politics. When the middle shows itself incapable of ruling us fairly, people are driven to more extreme ends of the political spectrum. People are more vocal about being right wing now, people are more vocal about being left wing now too - it's just we tend to only notice the views we don't agree with.
What has recent political history shown us? That the elite don't care about the rest of society. That politicians will say anything to get elected, and break their promises when they do. That government will happily spend money today in the knowledge that by the time it needs to be paid back, they'll be long gone and someone else will have to pick up the pieces.
Why did Trump win? Because Clinton lost. She came across as a know-it-all who people "had" to vote for because she knew better than they did. People generally dislike being told they are idiots, even if often they are.
Why did Leave win? Because the Remain camp were incredibly arrogant and lied through their teeth, presenting Doomsday scenarios and telling the public they would be morons to vote Leave. That the British should be happy to accept unrestricted immigration, be treated as the piggy bank of Europe and generally just shut up and do as they are told.
Remainers say Leave campaigners lied (they did), but conveniently forget the lies the Remain campaign told. Remain could have won, and probably should have. If they had been honest, if they had explained why Britain is better off with more immigration and better off in the EU, instead of saying we should just accept that we are better off this way, and if we can't work out why, we're racist idiots.
I don't particularly fear the rise of the vocal-right. The centre will trounce the right provided that it is open, fair and honest.
Most people who express right-wing views like "ban immigrants" are not inherently racist, certainly not inherently right-wing. What they are concerned about is their living standards, the money in their pocket, the lives of their children and everyday "trivialities" like that. Most of these increasingly vocal people would happily vote for, indeed love, a centre-left party if that party improved living standards and created a fair society where hard work pays well, where everyone who wants buy a home is realistically able to do so if they can hold down a job.
The "vocal right" is ripe for the taking. They just need to be shown what's in it for them. Give them lower taxes, higher incomes and better living standards, and they will evolve into the quiet, contented centre.