There's a community of people who are interested in Bitcoin for all sorts of reasons, and sometimes they can unite and organize events or encourage local legislators to make Bitcoin and other cryptos legal. But this isn't enough to call this community a social movement, IMO, because it lacks the common ideology. The interests align sometimes, but some people care about Bitcoin because they think it'll make them rich, some believe in the idea of decentralization and adhere to values of the Austrian economists, others are very privacy-focused and like it that Bitcoin can be sent without IDs, and I'm sure that within the community there are people from all parts of the political spectrum. There's also no formal organization behind Bitcoin or cryptos specifically, it's more about the community of users with Bitcointalk being a place where you can talk with lots of people from this community.