He is known as a far-right politician.
A far-right group held a demonstration.
In that country, the far-right party is rapidly gaining support.
He had been leaning toward far-right ideology since he was young.
That commentator is often criticized for being far-right.
極右 is a broad term for far-right politics in general, while ネオナチ specifically denotes adherents of revived Nazi ideology.
極右 refers to the far-right end of the political spectrum, while 極左 refers to the far-left end.
Compound of 極 (extreme) and 右 (right), referring to the political right wing.