A nitpick: don't use the apostrophe in the phrase "in the 1960s". It's not a possessive in that sentence.
See, e.g., https://www.thepunctuationguide.com/apostrophe.html
See, e.g., https://www.thepunctuationguide.com/apostrophe.html
Casual English is fairly fluid. People rarely talk exactly according to the rules of English class.