I remember how when Mel Brooks' movie Blazing Saddles came out everyone thought it was the most hilarious thing ever. It lampooned racism and presented tolerance in a humorous light, while the racists were categorically stupid and maniacal.. It also featured one of the first black-white preludes to a sex scene.
Nowadays, the left absolutely hates the film because they say nigger in it, completely forgetting the context of the film making fun of the right wing on every single base. Though, at the time, the humor was based in truth, as there was indeed rampant racism in the Western US at the time.
Nowadays, how the fuck are you going to make a leftist meme that isn't blatantly shilling? "Whoops, looks like I cut my dick off because I'm the wrong gender, haha," as an image macro? Even that would offend people.
So there are three major factors as to why leftists cannot and will not ever meme.
1. Their "humor" is based in lies, humor must be based in truth to be funny. "It's funny because it's true."
2. They are too afraid of offending people. You see, making fun of anyone or being even slightly self-observant is equivalent to the Holocaust. How many comedians have been under fire due to even remotely offensive jokes? Jerry fucking Seinfeld, king of Jewish comedy was in deep shit for making a joke about people using their phones, scrolling like a gay french king. If THAT offends people there is zero hope for comedy among them.
3. You have to be self-observant to be funny. There's a reason comedians are all right-wing, libertarians, black, or faux-leftists. The first 3 groups don't give a fuck about offending people and the last group are the Jews and Bill Burr. They're obviously redpilled and show it in their behavior, but hide it. Bill is a good example of this because he shows every now and then his contempt for these groups, then he backpedals by saying, "But look at me, I'm just an idiot." Or he makes a joke that leftists are too stupid to comprehend.
Leftism is the philosophy of Jews, and they can be intelligent and be Leftist because they KNOW they're screwing you over, and that's their entire goal. Goyim Leftists are either retards who follow the herd, or opportunists who want the benefits of associating with Jews.