Counter culture and exsistentialism

Due to my erratic health I was unable to attend this lecture, however I will attempt to discuss the topic of the lecture to the best of my ability. First of all the subject of counter culture I found to be an easily understandable concept as there are examples of it in our own culture, for example the racial gangs in particular in London that fight for territory and hierarchy in terms of organised crime, this represents youth culture that goes against the established order of the labour party and shows more of liberal individualism.
I thought linking this concept to the sixties was a good example of this, as every aspect of the sixties represented this, for instance the anti Vietnam war protests went against America's capitalist image, as the protests in a way encouraged Communism and its right to be established, so that peace may be maintained. Finally the frequent drug use and hippy movement went against the American cultural ideal of the 'American Dream', as it encouraged people to be unproductive and lazy, stopping them from achieving great things with hard work and ambition.

Existentialism works with counter culture as it encourages people to follow their own path and break the established culture if necessary. I am not sure whether this was touched on, but does the philosophy also acknowledge the repercussions of people doing whatever they want to? As it seems to me that counter culture and existentialism could be quite destructive, by encouraging people to act selfishly and not consider others could lead to break downs in society, the home, workplace etc. Therefore although this is a rather pleasant philosophy on a selfish scale it cannot work on a wide scale level, as it works against the needs of the majority.