I wonder how "real" is this "safe space" trend that the US is talking about lately. Is it an actual thing or a passing trend which will be forgotten till summer

I wonder how "real" is this "safe space" trend that the US is talking about lately. Is it an actual thing or a passing trend which will be forgotten till summer? In any case its one of the weirdest things ever, older generations accusing the younger of not being radical enough. Perhaps the youths are right though, some freedoms are just too much, we don't need to exert them, the same way we don't need privacy anymore. There is value in safety, familiarity, coziness, instead of being out in the open wind. It's perhaps some kind of alienation towards multiculturalism/multiethnicism, and the constant bickering that comes with democracy. Safe spaces come at a cost though, as they inevitably turn to a form of terrorism, radical religious extremist groups for example begin with the formation of safe walled gardens in their communities.