In reply to @cubacenter

This was a legacy of the Molotov-Ribbentrop Pact that did not end until fifty years later. https://cubacenter.org/cuba-brief/2024/08/24/cubabrief-observing-black-ribbon-day-in-remembrance-of-victims-of-totalitarianism-and-the-35th-anniversary-of-the-baltic-ways-nonviolent-triumph/ 16/