The sole concept of taking care of minorities may change. In last 10 years movements like the "alt right" got traction and the tendency to use left-wing tools like postmodern deconstruction etc. started being used by groups other than anarchists or leftist scholars. Now it's still something a bit unacceptable, but as we know how similar revolution worked in 50/60, ten years is enough for such changes to spread across society. That's what I mean.
Or if this cultural context is too emotional for you, look how cultures of countries falling into the influence of communism after WWII changed, and then changed again after its collapse. In first years only progressive minorities thought in terms of the new system, then a few years later most people was either pro or against it (i.e. thought within the cognitive framework of communism or post-communist capitalism respectively, even if they disliked them it was within the discourse of the corresponding system). Polish Nobel prize winner Wisława Szymborska is good example: in early years after WWII she adhered to the communist ideology, and that was widely accepted at that time (not to say it was something new to many people), then when she earned the Nobel prize in 1996 she was criticized for that period of life (i.e. for the society such ideological system was already unacceptable), and even earlier she was distancing more and more from the communists over years.
Obviously some deeper spirit of an nation does not change, but it's quite easy for the inhibited views to go mainstream in 10 years if the political reality gives a field for such changes. And current situation definitely makes such change more plausible, as old medium (TV) has just died and a new medium (Interned) gained superiority – a thing distinctive for breaking periods in history (vide: printed press and emergence of Communism, radio and Nazism, TV and hippie revolution, cassette tapes and xerography (2nd circulation) and the collapse of Communism). Look how Hitler in about one decade became from an unknown political with a bit radical behavior into a widely accepted ruler. The emergence of a new medium (radio) and political situation (economic crisis and German loss of land in WW I) was enough for people to accept such previously unacceptable movements. For them it was something new, progressive and tempting, it became any sort of “backward” or “bigotry” only several years after WWII.
While it's easy to just say that whatever is bigotry now will remain bigotry, in 10 years it may not have support in outside world anymore, as the concept of a “bigotry” is a social construct and changes over time.