Idea diffusion

When Black Lives Matter protests exploded in the summer of 2020, they did so on a global scale. Protests around the world invariably had a dual goal: expressing solidarity with the American BLM movement, and linking that movement’s goals to related domestic concerns. I am interested in the international spread of these kinds of political ideas: How are ideas that originate in one context mapped to another situation? How do language barriers affect the diffusion of ideas? And how have social media accelerated and changed the way in which ideas spread?

_{Photo: Elekes Andor (Wikimedia Commons, 83482595, CC BY-SA 4.0)}