Nothing for the most part, but the context and implication (and especially the imagery) is important.
Images of communists like Lenin with the ominous background, red shade, bloodstained hammer and sickle, and reference about famous communist death tolls is most often created by devout anti-communists or your average internet fascist thats more intetested in the spectacle of the association of communists and death than making legit critiques (or a tasteful jab) against a communist.
And more recently, this same propaganda has been peddled by various anarcho-communists on the world wide web without realizing the source of the material. Or even if they’re anarchist-made, to the unaware: whether it be the common liberal or the non-wellread leftist, this reaffirms the idea that “yeah Lenin is bad because death and his inefficiency, therefore all leninists of all varieties regardless are all bad too.”
Propaganda like that weakens public interest in the left or any cooperation between various leftists. Plus, and this should be a given, any anti-communist propaganda (well in this case anti-lenin), although may have been created by anarchists, can attract the wrong sort of attention (ie actual fascists liking what you post) because of your use of imagery.
Shit like that is what made me hate Leninists (or any non-anarchist communist) and assumed they were all 100% the same when I first became an anarchist.
Now if we’re talking juicy critiques of lenin then yeah sure im game. If we’re talking juicy jokes and quality memes about lenin then heck yeah i love that pic of lenin’s face on patrick from spongebob asking him to give power to the local soviets but he does everything to avoid it. If we’re talking about the bad shit of the ussr then (so long as we got our history right) then yeah lemme in. But all of these critiques and whatever else needs to be handled carefully–or at least not in the obnoxious way of drawing a bloody hammer and sickle, a scary lenin, and a textbox that associates varied ideologies of communism and its proponents with death.
All of that mimics the average fascist propaganda of what communists are like. And posting that shit reaffirms that idea to the unaware. If you wanna make fun of lenin and say hes bad, just do it in a way that doesnt mimic the average fascist and mccarthyist understanding of communism.
If you wanna fuck around with another communist, just do it in a better way that doesnt mimic the same methods used by the assholes we all collectively hate.