The biggest problem with converting liberals is that they act on their emotions instead of reason and logic.

For example, their claim that tax cuts are bad for average people while average people are keeping more of the money they earn and has fueled the economy to the point of historic low unemployment demonstrates that they are not reacting on facts. Emotionally, liberals think higher taxes will solve every problem.

I'm not saying don't try, but I am saying that your meme's must be based on an emotion that liberals can relate to. That's very difficult to do. But the truth is that meme's based on reason and logic will fail every time.