That said, I have yet to see anything resembling a credible source that claimed more than 10,000 direct deaths caused by the Castro regime. I've seen much higher numbers (50,000 or more) in terms of indirect deaths: people trying to get out of Cuba and drowning in the process.
The population of Cuba around the time of the revolution was about 7 million; now it's around 11 million. The population of the Soviet Union in the 1930s was between 150 and 200 million (good statistics are hard to come by; see https://en.wikipedia.org/wiki/Soviet_Census_(1937) for why). Even if we take the extreme 7 million and 200 million numbers, 10,000 Cuban deaths is equivalent to about 285,000 Soviet deaths on a per-capita basis. And that's over a 50-year or so period. So yes, Stalin killed a lot more people no matter how you count it. Of course, "leader who killed a smaller percentage of the population than Stalin" is a _really_ low bar; pretty much everyone except Pol Pot clears it.
In general, the "Cuba under Castro" numbers for political violence don't seem any worse than other Latin American countries in the 20th century. Again, this isn't _good_, just like it's not good that we can end up talking about "oh, that's equivalent to hundreds of thousands of deaths on a per-capita basis, which is _tiny_". :(
For comparison Puerto Rico have had about 10k murders in the last 15 years alone[1], and that's in less than half the Cuban population.
From 1998 figures[2] and 2002 population numbers I guesstimate that officially about 820 murders occur per year in Cuba, and the 10k in 50 years evens out to 200 per year.
[1] http://www.estadisticas.pr/iepr/LinkClick.aspx?fileticket=nf...
[2] http://www.sld.cu/sitios/dne/buscar.php?id=3297&iduser=4&id_...
Yep. Would it likewise surprise you to learn that the Pinochet government, which is described in similar ways, killed (at the high end of the estimates; the officially accepted ones are 10-20% lower) about 3200 people and "disappeared" about 1000, over the course of 17 years? Also, about 30,000 tortured, though; I have not seen claims of this for Castro's Cuba. All this out of a population of 10-13 million. It sure surprised me when I looked up the numbers.
I'm not condoning the things either government (Pinochet's or Castro's) did, but they are both nowhere close to being "drenched in blood" the way Stalin's or Pol Pot's or Mao's governments were.
[1](https://en.wikipedia.org/wiki/Human_rights_in_Cuba#Political...)
