The recent change has also been white people waking up to the reality of racism in America via social media and and (more recently) an openly racist president -- it's hard to see why this would be viewed as problematic, regardless.
It makes sense that some "liberal whites" might have a better understanding of the extent of racism in this country than many black people because many whites have family members, bosses, and co-workers who openly espouse racist rhetoric -- something that is becoming less and less acceptable to "liberals" as time passes, especially in the post-Obama era.
And also I see no mention of the recent "radicalization" of right-wing white supremacists who are now openly shooting blacks, Jews, Latinos and Muslims in public -- a "change" that has been so exceptionally bad that the FBI determined them to be the most dangerous terrorist threat in America.
It's not "radical" to want to see fairness and equality in America -- even if some choose to look the other way when their party opposes it.
You speak of "exaggerations" while ignoring and dismissing direct evidence that your party engages in racist voter suppression against minority voters -- maybe the opposite is at play in that you prefer to downplay an obvious problem within their ranks.
Which is more problematic: whites becoming more "liberal" or white supremacists suppressing votes and harassing and shooting people of color?