It was massive, because before the hippies came, western societies were bourgeois; narrowminded, conservative. OK, I grew up in Amsterdam and that town was back then very progressive. My parents became, during the 60s more open: people talked more freely about topics like atheism, civil rights, even green politics, they became independent from church, love and sex could be discussed more openly, the upbringing of children (=me!) became more open and less strict (eg teachers weren’t allowed to hit pupils), respect for the police dwindled , male socialist politicians suddenly wore jeans and had long hair, my father had hair down to his shoulders and my mother hotpants, my smoked pot during the breaks in school.