basically all of (south) eastern europe + all (now ex-)soviet republics until the 1990s

the bullet part: civil war in ussr (the whites were proto-fascist af) and ww2 in the rest of (south) eastern europe

+ fascists were perpetually heavily persecuted by the agencies of state socialism

now the movement part: socialism builds around solving the issues of the working classes first and foremost by changing the material basis of society. It provides solutions which take the problem by it’s root (e.g. not reforming capitalism – which is the root cause of poverty, homelessness, hunger etc. – but eliminating it)

facism (partially) uses a perversion of leftist rhetoric to fool and garner support from working people.

after said state socialisms found their ends, the following bourgeois “democracies” failed to address the needs of working people, allowing for fascist rhetoric to capture the minds of many. and ofc the rigorous persecution stopped too

the former territory of the GDR provides one of the best examples of the combination of the two

western and southern europe (mainly France and Italy; with the exception of Spain, which had a continued fascist presence long after WW2) had momentary violence against fascists, which was not upheld after ww2 (or after the revolution in Portugal’s case), but still had flourishing socialist movements (talking about real socialism, not the french “socialist” party), mainly strong communist parties. after their disintegration in the 90s, fascists had a much easier time and we are seeing the effects today just as well in the rest of europe as in Germany