This is pretty much exclusively true of sheltered relatively affluent (“middle class” in popular use, but including the upper income end of the working class) people born around 1980 who reached social awareness in the brief local minimum of general social division (but an not of partisan political division, which was gearing up quite hard at the time) of the mid- to late-1990s.
Everyone else, pretty much, was already aware of the underlying divisions, even if they were enjoying the brief respite in the immediate palpability of them.
I bet my life it wouldn't have happened if the UK gov implemented the same workers protections and immigration rules as Germany, for example.
Wait 4 years, or 2 years for a recall…
If it means that you can't say anything about a large group of people, I'm not sure I agree, given that most countries can agree on enough things to be governed. I'm not exactly sure what the point of the argument is.