Sorry to be a downer, but this is a really good point.
With this lie escalating to violent threats against the Haitian community, we perhaps need to put a pause on joking about this insidious hoax. They are trying to start a race war, and memes likely aren't helping.
This might upset people but when we joke about things I think a lot of times we normalize it. We do it as a means of coping with the insanity in front of us but in turn we often deescalate the overall seriousness of the issue. I don't think this is particularly good for voter turnout. I feel like this was partly how Trump managed to win the presidency in 2016. People memed and laughed about the idea of it occurring, didn't take it seriously and well it happened.
I apologize for being a stick in the mud, it's not my intention to be the meme police or take away your joy but I agree with the sentiment that we shouldn't trivialize what's at stake by laughing it off.