Todays "Socialism" is essentially Social Democracy that didn't assimilate with Liberals and Conservatives yet and has got nothing to do with Marxism or Anarchism and the ideological visions of creating "classless" and moneyless society with no borders around the world (they mostly disagree on the methods of achieving the endgoal with the formers most influential branches aka Leninists/Maoists implementing one ruling party to guide through the total transformation of society). It's even a very Nationalist ideology in its core unlike Anarchism and non-Stalin, Mao or Ho-Chi Minh Marxism. Heck, you could even start a conversation on how "Marxism-Leninism" even fits with Marx's Vision, but that doesn't change at the end that these ideologies at least claimed to represent that mans vision and have done some of the worst crimes in human history.
I could go further about how the economic vision of Socialists (starting with Eduard Bernstein, Keynes in 20th century and so on) doesn't align with Marx or Kropotkin, Bakunin and other influential Anarchists at all if there's any kind of interest.
Anyways, whoever said "only far-Leftists did the deporting and masskilling" is likely too far gone in the other direction and slept through history classes like goddamn.
Hitler, Japanese army under fascist emperor banner and Mussolini did some of the most terrible genocides in human history, same with Stalin, Mao or Pol Pot, actually few of the perpretators of the most evil and human life erasing genocides in human history weren't either Fascists or "Marxist-Leninists" and similar branches of Marxism (one of them was King Leopold from Belgium with his ordered genocide in Kongo and other regions in Africa). You're not exactly better for denying atrocities of one of these ideologies who constantly perpetrated these kinds of human atrocities that in part were the reason to create UN in the first place alongside 2 world wars, even if the implementation of it was essentially a failure since it's birth.