Final answer:
The positive reception of post-concert-goers in New York was influenced by the celebration of youth, spirit of rebellion, and the cultural embrace of individuality during the Woodstock era, symbolizing a significant social and cultural movement of the 1960s.
Step-by-step explanation:
The positive reception of the flow of post-concert-goers into New York can be seen as a reflection of various factors including the celebration of youth, the spirit of rebellion, and the cultural embrace of individuality. During events like Woodstock in 1969, the congregation of nearly 400,000 people, not only exemplified a massive musical phenomenon but also symbolized a significant social and cultural movement. The sense that this celebration of music and freedom was a cultural touchstone for the American youth of the 1960s fostered a welcoming attitude towards the droves of attendees who shared in this sentiment. Moreover, the historical context of the time, marked by civil unrest and a desire for change, likely contributed to the general acceptance and even enthusiasm for this influx of concert-goers in New York, as citizens saw the event as part of a larger societal shift towards more progressive values.