What are tankies? What does sea-lioning mean? - eviltoast

I’ve run across these terms several times, but without enough context to figure out what they mean. Could someone help me out, please?

ETA All of you are amazing! A huge thank you to everyone who responded, and an extra thank you to those who have provided links or explanations to further and/or related information. I am learning so much by reading all of these comments!

  • ImOnADiet@lemmygrad.ml
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    1 year ago

    I wonder what’s more fascist, defeating the nazis like the ussr or collaborating with the freikorps to kill communists like the SPD :)