These graphs may be true for the US, but in Europe the Overton window has been shifting Right in my lifetime, since the Wall fell, mostly by copying bad ideas from the US.
When I was a kid Sweden was still "the People's Home" and proudly Third Way, staunchly Social Democrat.
In the 90s neoliberal policy ruled, copying Reaganomics, lowering taxes, selling public utilities to the market, engaging in New Public Management, but immigration policy was open and had popular support, xenophobes were politically active but were booed off the streets.
In the 00s and 10s the xenophobes got their party into the mainstream and into the parliament and are now the biggest party.
β² syzito.xyz/@selzero/1111991013β¦