A study of 57,299 posts in Spanish and English has measured online opinion on the US blockade of Cuba. Its headline finding is that seven of every ten messages on the topic support or repeat the Cuban denunciation of the policy. Cuban officials have long described the decades-old measures as a blockade rather than an embargo, and the study follows that framing. The message reached 173 countries, carried by US legislators, governments of other nations and thousands of individual users. Cubadebate published the findings under a title that translates roughly as the blockade has no one to defend it. The sample size gives the analysis unusual weight for a study of social media chatter on a geopolitical dispute. The data suggests the argument against the embargo currently dominates the online conversation the researchers tracked.