I can not cite anything on a grand scale, it is something I experienced during my personal life, mainly but I try to explain these experiences to you and maybe this can be extrapolated towards a whole people.
The first wife of my father was jewish. They were both born in 1935 in Hungary and experienced the whole process. As she was jewish, her social status suffered severely for obvious reasons during the 40s and half of her family was killed during ethnic cleanses. She was hidden with her mother throughout the day in baskets full of clothes in a house of a rich bankier, who had was a friend of the family. She survived the war and grew up in hungary. She married my father but after some years, they were divorced. She became pregnant without being married from another guy later and gave birth to a small babygirl. As social conventions were still pretty strict during these times, an unmarried woman giving birth was outrageous and still very difficult to live with. She did everything to hide her belly getting bigger and gave birth to her daughter alone at home. She hid her throughout the day in a basket for washed clothes until she was 3 and was found by someone else working for said bankier. She hid her child in exactly the same way, as she was hidden. They were both deeply traumatized and the ex wife of my father was never able to live a normal life. She was done. Trauma's go deep into the human mind, having on everything these individuals see, experience, feel and do. It has impact on everything and it's impossible to hide these habits, they start to transfer these things onto their children. Inherited trauma, basically.
Something I personally experienced and not know by stories of my family has to do with domestic violence. During my work for some law firms and also while practising family law myself, I've noticed that violence is inherited/kept in tradition in those families who's parents were experiencing the same. Many clients I've seen who were hitting their children were hit themselves when they were young. Same goes for sexually abused persons. I think when it comes to victims of sexual abuse, it's actually documented and subject of psychological studies that these sorts of habits seem to have such a strong influence onto the invidual, that they start to develop something similar. They start to get dull when it comes to sexuality & related. Obviously with the chance for exceptions.
Something else I've always found strange was the way my collegues were thinking and talking about our state exam after hey passed the bar. When they were students, they hated the system and found it stupidly elitarist and far too strict. Ineffecient, outdated and what ever not. Everybody was asking for reforms and changes. Once they passed the bar, they forgot all that. They thought it was the best system to ever grace the academic world, producing only the best lawyers.
It's safe to say that all people raised by traumatized parents will have been influenced by their parents' traumas. And the jewish people, as a collective, suffered a huge trauma. It's pretty likely that many generations are still need to be born until the jewish people stop being heavily influenced by the trauma they suffered from the holocaust, if ever.
One should think so, but see above. I think the opposite is the rule rather than the exception. Also, just have a look at the Israelis and how they handle these kinds of situations. They basically created ghettos, similar to how they were kept in the war. They are doing lots of crimes against many basic human rights.