As European, it varies a bit per country, naturally not always without possible issues, and as a 1970's child back then the freedom was much bigger, still in general we still have the general attitude of not calling authorities just because kids are having fun on their own.

All the best, and maybe something for the 1980's US kids that I just watch recently from a stand up, that touches how US lost this culture.

"Why 70s & 80s Kids Rule: The Ultimate Guide" by Karen Morgan

https://www.youtube.com/watch?v=p4RfL1VTENM