It means Nazi sympathisers and ethnicity-driven supremacists.
And also, thanks to our irresponsible media and political rhetoric, anyone who believes in borders, biological sexes and colour-blind equality before the law.
In this way, people who have nothing to do with Nazis are smeared as Nazis, ironically, to attempt to prevent them from becoming Nazis.
In this way, a tiny number of actual Nazis (who hate the majority of the people who are today called "far right") are taken as evidence of the existence of a massive far right which has to be countered through censorship, visa bans and suppression.
I covered the last Tommy rally and talked to hundreds of people. We encountered one person who was genuinely unpleasant (and not so much for his opinions but for being drunk and obnoxious). The rest were normal, ordinary people with opinions shared by the majority of the country.
The reality is that the media who tell you the opinions the people they report on supposedly have don't actually talk to them. I saw one prominent mainstream journalist at the last protest who actually went into the crowd and chatted to people. The rest of them stand in front of a group of protestors and tell you the company line.
This applies to every issue, btw. Once you see it, you can't unsee it.