Has anyone read Flipnosis by the psychologist Kevin Dutton? It's fascinating - especially the chapters which deal with cults, group mentality, and why we're all susceptible to conforming to certain behaviours and being influenced in some circumstances. Some of the experiments he talks about are very interesting.
The magic bullet seems to be to question absolutely everything, and to have the courage of your convictions to speak out if you know something is totally wrong, which is very difficult in some situations. If you do speak up, chances are you're not the only one who shares your views - it's just that others are too scared to speak up, especially in group situations.
www.amazon.co.uk/gp/aw/d/B004I8WLOS/ref=tmm_kin_title_0?ie=UTF8&qid=1459774280&sr=8-1