According to the speaker, why did the following events occur: After 9/11, the murder rate in New York City went down by 40 percent. The suicide rate went down. The violent crime rate in New York went down after 9/11. Even combat veterans of previous wars who suffered from PTSD said that their symptoms went down after 9/11 happened.
A、Basically, we tribalize, and that process of unifying feels so good and is so good for us, that it even helps people who are struggling with mental health issues
B、The reason is that if you traumatize an entire society, we don't fall apart and turn on one another.
C、We cannot come together .We just split apart
D、People don't want to be sad any more