Even very innocent family videos are being flagged all the time, you just have to speak a foreign language and look like a middle easterner.
Some say that just speaking in elevated tone in Arabic and having a beard is enough to be flagged on big dotcoms.
And if you are openly are a member of just any social organisation, your account deletion is pretty much a matter of time if you are a middle easterner, no matter if you are pro-regime, anti-regime, or have nothing to do with that. The Egyptian national symphonic orchestra was once banned by Facebook as a "terrorist organisation"
This is ironic given that all big social networks including Facebook outsource content censorship to companies in obscure countries like Algeria or in Balkans.
I'd love to see a source for that bit :)