It has long been observed that, cut off as they are from everything classical and good in the world, the only true common culture the shitlibs have revolves around a small set of books, movies, TV shows, and celebrities. The most ubiquitous of these is, of course, Harry Potter.
You will frequently hear shitlibs compare political figures and groups to characters from Harry Potter. The Chief Cunt herself, J. K. Rowling, compared Trump to the big bad of the series, Voldemort. Trump tapping my fellow sunflowerbro Kris Kobach was compared to Voldemort appointing one of his lieutenants to some government office to persecute mixed-breed wizards. (Barely-veiled allegories for race are a central theme in Harry Potter.)
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I won't go into extreme detail, but basically, for most of the history of the Wizarding World, wizards marrying "Muggles" (non-wizards, think goyim) and diluting their magical blood was considered a Bad Thing. This is wrong and bad and evil, even though having kids with Muggles will lead to some of your kids being unable to use magic. The children of these pairs, even the ones that CAN use magic, are discriminated against, even thought they're just as good as pure wizards, goy!
At the time of the books, these social mores are changing. The people who are trying to stop wizards from breeding themselves out of existence are Bad People who use Dark Magic and want to do Bad Things because they are full of Hate and Jealousy. Also, they follow a Bad Man who does Bad Things. Also, they wear skull masks and use skulls and snakes as their symbols.
Now, the central plot of the books centers around a magical wizarding boarding school. Here's where even the most lucky of you will know at least a bit about the "lore". The school is divided up into four Houses, into which students are Sorted by a Magical Hat. (Yes, really.) These Houses are supposed to be sorted based on which personality traits you exemplify. Gryffindor is Bravery and Courage, Ravenclaw is Intelligence and Smarts, Slytherin is Evil and Bad and Racism and Snakes and Elitism and Rich Kids who Hate, and Hufflepuff is Determination and Loyalty or something. Most of the Bad People in the series come from Slytherin. I won't go into the plot of the books themselves, because that is tangential to my point.
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My point is, this bullshit little liberal fantasy is central to their common culture. It is something that they will all get, or at least pretend like they do. When J. K. Rowling says that Trump is literally Voldemort, this evokes gut feelings of Racism and Snakes and Bad Things. Comparing Kobach to Dolores Umbridge evokes feelings of kangaroo courts which sentence people to life in soul-sucking (literally) prison just based on their ancestry. Comparing Trump to the bad guy makes them, by default, the good guy, which makes them feel good and powerful and magical.
However, and here is the chink in their armor, they run into the fundamental flaw of Jewish media (although Rowling is a goy); they make the bad guys seem cool. The Bad People in the series are members of ancient, rich, politically powerful dynasties. They wear black, silver, and green, have skulls and snakes, and are suave and handsome. A frequent thing in the Harry Potter fan community is trying to rationalize the Bad Guys as being less bad, because, well, they're cool. The fans want to believe that the cool Snake people are really the good guys.
What I propose is that we coopt Harry Potter with our memes. We can meme Trump and co. into Voldemort and the Death Eaters. This is like meming Trump into literally Hitler, except it will hit shitlibs in the feels in a way that Trump wearing an armband doesn't. If we can hijack their culture, we can do a lot of damage. We can sell this as a blackpill. "Voldemort has won."