My grandfather, a Dutch jew, narrowly survived the Nazis, due to the bravery of those who kept a terrified schoolboy in hiding at great risk to themselves - the rest of his family were not so lucky. The campaign of the Nazis to convince the populace that the jews presented a great threat to them was ramped up over a period of years, and was also supported by "scientific evidence". There is no reason whatsoever that the atrocities of the past cannot be perpetrated again; human nature does not change, and we are no better now than we were then. Much faster than was the case with the Nazis, people are being convinced that the non-maskers are a threat to them, and that this justifies their marginalisation, or even, hostility towards them.
My husband is not of the same mindset as I am - he thinks that this hysteria will lose momentum, and that my worst nightmares describe a sensationalist extreme which will never come to pass - I hope he is right. We are, however, united on the importance of personal freedom, he just doesn't really believe it is at threat.
My mother-in-law (amongst many others I know) supports the mask mandate, despite telling me she doesn't believe masks are effective, and supports a mandatory Covid-19 vaccine, saying that my personal freedom is not as important as the health of others. She would ignore the authority of her son and myself to make decisions regarding our children's health (and our own), and have our lives massively sanctioned for non-compliance.
In the last six months, we have been forced to remain home, in isolation, without seeing our families, or our friends. Health services, schools, playgrounds, playgroups, picnics, beaches, more than one walk a day - against the law. They made it illegal for our children to play together, or for me to have a cup of tea with my mum. And nearly everyone I know has bought into this, for an enemy we cannot see.