Memes are more than fleeting online jokes—they are cultural carriers of meaning, emotion, and political orientation. In the digital age of the 2020s, a single image or phrase can mobilize movements, normalize bias, or undermine truth within seconds. This book traces how memes evolved from harmless entertainment into powerful instruments of persuasion and polarization across platforms. It reveals how visual simplicity and emotional speed make memes ideal tools for ideologues, activists, and disinformation networks. With historical context and media analysis, it unpacks the intersection of humor, identity, and ideology—showing how everyday digital culture became a battleground of belief. Readers gain an informed perspective on the hidden architectures of influence shaping the online public sphere.