Right, I was going to mention the Houthis. Afaik, that's a tribe / ethnic group, and although according to wikipedia 'houthis' in the context of the yemeni civil war is actually shorthand for a specific political/military group whose members are predominantly houthis, it still seems wrong (e.g. can you imagine if 'black panthers' were on the list and it just said 'blacks'?!) But given its not the original document, perhaps this is a translation. Also, I really don't know much about the conflict, but I always see them referred to in western media (such as The Economist) as 'houthi rebels' rather than as terrorists. I wonder if this reflects the importance of rhe Saudi Arabian market to facebook? Perhaps different organizations are censored in different countries.