Nonetheless, when Facebook had to face a small content-related crisis in Germany in 2016, that didn't stop Zuckerberg from saying the the company hires teams of hundreds in Germany to stop the spreading of hate content. They don't.
Source: Inside Facebook - Im Netz des Bösen, Süddeutsche Zeitung, 2016. (sorry, paywall). http://www.sueddeutsche.de/digital/inside-facebook-im-netz-d...
source: was infantry.
https://www.forensicfocus.com/Forums/viewtopic/t=2329/
More than "training" it is "assistance" and "psychological support".
Keeping large offices running smoothly and in nice conditions takes an enormous amount of manual work, a lot of which other employees never see (much of cleaning/maintenance is done over weekends and at night).
Not for large advertisers they don't. Here in Ireland for example their outsourced advertising support & soft-sales, a large part handled by Accenture, are huge. Possibly more numerous than the Facebook EU HQ here. I'm sure the case is similar elsewhere.
The NYT has a great article on that, not related to Facebook but it shows the general trend: https://www.nytimes.com/2017/09/03/upshot/to-understand-risi...
Maybe it doesn't belong on the same table as a company like Wells Fargo since it's a different basis of comparison