The fact that the camp director was Adams friend doesn't prove much by itself. I don't see some conspiracy in it. Maybe the camp director felt obligated to ask Adams because he was his friend (and despite the fact that Adams wasn't a documentary photographer). Maybe when asked Adams saw in it a chance to do something that he felt was honorable in showing the daily life of the prisoners persevering in difficult circumstances (or to quote Szarkowski "in spite of the injustices that they had suffered, had maintained their cohesion, their dignity, and their will"). Did Adams show them socializing or did Adams show them how they should socialize? Maybe both? And how should one socialize (or not) with the country one is a citizen of or wants to be a citizen of? These are complex issues and we would be misleading ourselves if we don't treat them as such because of ideological views (which are always blinding as a collective).