The video shows young American college students being interviewed on the topic of identity. These students have been brought up on the liberal principle that the highest good is a freedom to self-define who we are and that what defines morality is therefore our willingness to accept others defining themselves as they wish.
This, taken logically, leads to some extraordinary moments in the video in which students refuse to challenge the most absurd claims about identity:
David French at National Review summed up the mentality reasonably well:
Essentially the new morality is “you do you — so long as it doesn’t hurt me or someone else in a way that I immediately recognize.” The new immorality is any act of “intolerance” that purports to interfere with this radical autonomy.
That's well put, except that this moral principle isn't really new - it is the same liberal principle that has been driving social developments in the West for generations now.
The principle is not really respectful of identity. If anyone can choose to be a woman, then how is being a woman meaningful? It is significant only as an expression of choice, and the choice is arbitrary as the same person could equally choose to be a man or something else altogether.
Nor can you really uphold communal identities according to this mindset. The attitude of "you do you - so long as it doesn't hurt me" is radically individualistic. It is about me the individual choice making individual, rather than the group I am connected to through a real, objective set of attributes.
You can also see why transsexualism is the soup de jour. There is no way that Westerners with this mindset are going to object to a man identifying as a woman. Such Westerners are going to agree to all the demands of the transsexual movement.
Finally, I'd like to reiterate the basic truth that ideas have consequences. It can be difficult for some people to grasp the hold that ideas have on intellectual types. The most important thing of all is not even the culture war, as important as that is. It is not even the use of emotion to sway political debates. It is rather the establishment of first principles. It is the answer to questions such as "What makes a man good?" Or "What are the aims of human life?" Or "What is the good that human societies should seek?"