Orwell wrote a nice essay on this, all the way back in 1940s, when the war was still being fought, and organizations like the British Union of Fascists were around:
"The sinister fact about literary censorship in England is that it is largely voluntary. Unpopular ideas can be silenced, and inconvenient facts kept dark, without the need for any official ban. Anyone who has lived long in a foreign country will know of instances of sensational items of news—things which on their own merits would get the big headlines—being kept right out of the British press, not because the Government intervened but because of a general tacit agreement that ‘it wouldn’t do’ to mention that particular fact. So far as the daily newspapers go, this is easy to understand. The British press is extremely centralised, and most of it is owned by wealthy men who have every motive to be dishonest on certain important topics. But the same kind of veiled censorship also operates in books and periodicals, as well as in plays, films and radio. At any given moment there is an orthodoxy, a body of ideas which it is assumed that all right-thinking people will accept without question. It is not exactly forbidden to say this, that or the other, but it is ‘not done’ to say it, just as in mid-Victorian times it was ‘not done’ to mention trousers in the presence of a lady. Anyone who challenges the prevailing orthodoxy finds himself silenced with surprising effectiveness."
"The ordinary people in the street – partly, perhaps, because they are not sufficiently interested in ideas to be intolerant about them – still vaguely hold that ‘I suppose everyone’s got a right to their own opinion.’ It is only, or at any rate it is chiefly, the literary and scientific intelligentsia, the very people who ought to be the guardians of liberty, who are beginning to despise it, in theory as well as in practice."
"One of the peculiar phenomena of our time is the renegade Liberal. Over and above the familiar Marxist claim that ‘bourgeois liberty’ is an illusion, there is now a widespread tendency to argue that one can only defend democracy by totalitarian methods. If one loves democracy, the argument runs, one must crush its enemies by no matter what means."
"1940 it was perfectly right to intern Mosley, whether or not he had committed any technical crime. We were fighting for our lives and could not allow a possible quisling to go free. To keep him shut up, without trial, in 1943 was an outrage. The general failure to see this was a bad symptom, though it is true that the agitation against Mosley’s release was partly factitious and partly a rationalisation of other discontents. But how much of the present slide towards Fascist ways of thought is traceable to the ‘anti-Fascism’ of the past ten years and the unscrupulousness it has entailed?"
(Note that the guy writing all this was a socialist who volunteered to go and literally shoot at - and be shot by - actual Fascists in the Spanish Civil War less than 10 years earlier.)
But how do you know who is a 'freedom fighter' and who is a 'terrorist' then? Do you let google and facebook decide?
Look, an "Anti soviet warrior", "on the road to peace" - https://www.businessinsider.com/1993-independent-article-abo...