See also Tthe Great Leap Forward.
I'd say they count-- if a system doesn't allow for quickly changing (or better, preventing) policies which cause death on a grand scale, there's something wrong with the system.
Something very wrong - yes.
Mass murder - ??
Edit to add: On reflection, the Great Leap Forward is a lot more like Stalin and the Kulaks than the unedited version of this comment might suggest.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.