pfctdayelise is talking pure nonsense (as she often does in legal issues at Commons). The sense of the policy is to allow small exceptions from the "all must be free" doctrine. The exceptions must be legal according the national law and according the US "fair use". Each European country has exceptions similar to "fair use": e.g. German "Zitatrecht". If http://www.ivir.nl/dossier/implementatie_2001_29_EG/wetten/tsjechie.pdf is the actual Czech Copyright Act article 31 is relevant allowing "quotations" of works for teaching purposes. But I think the case is that rights owners give permission for Wikipedia only (which isn't allowed at Commons which only accepts works under free licenses). One can then conclude a fortiori that these uses are also according the WMF policy.
Please remember that whole WMF projects are dealing with unfree content: Wikiquote has lots of quotations which are copyright protected. These should be deleted before any Czech picture.
Klaus Graf