This article is dismissive of legitimate concerns and desires by lower class whites. Obama's race speech in March 2008 (at the height of the Jeremiah Wright controversy) included this portion:

In fact, a similar anger exists within segments of the white community. Most working- and middle-class white Americans don't feel that they have been particularly privileged by their race. Their experience is the immigrant experience - as far as they're concerned, no one's handed them anything, they've built it from scratch. They've worked hard all their lives, many times only to see their jobs shipped overseas or their pension dumped after a lifetime of labor. They are anxious about their futures, and feel their dreams slipping away; in an era of stagnant wages and global competition, opportunity comes to be seen as a zero sum game, in which your dreams come at my expense. So when they are told to bus their children to a school across town; when they hear that an African American is getting an advantage in landing a good job or a spot in a good college because of an injustice that they themselves never committed; when they're told that their fears about crime in urban neighborhoods are somehow prejudiced, resentment builds over time.

Like the anger within the black community, these resentments aren't always expressed in polite company. But they have helped shape the political landscape for at least a generation. Anger over welfare and affirmative action helped forge the Reagan Coalition. Politicians routinely exploited fears of crime for their own electoral ends. Talk show hosts and conservative commentators built entire careers unmasking bogus claims of racism while dismissing legitimate discussions of racial injustice and inequality as mere political correctness or reverse racism.

Just as black anger often proved counterproductive, so have these white resentments distracted attention from the real culprits of the middle class squeeze - a corporate culture rife with inside dealing, questionable accounting practices, and short-term greed; a Washington dominated by lobbyists and special interests; economic policies that favor the few over the many. And yet, to wish away the resentments of white Americans, to label them as misguided or even racist, without recognizing they are grounded in legitimate concerns - this too widens the racial divide, and blocks the path to understanding.

This is one of the reasons people are voting for Trump. I think the most current wave of political correctness ignored these forces and was in many ways counterproductive, by fueling the resentment that led to Trump.