As reported by the Washington Post, among babies under the age of two, non-whites outnumber whites. The mood of the article is celebratory rather than alarmist.
80% of seniors over the age of 65 are white. I predict that this will cause the left to turn away from their support for Social Security, because it will come to be seen as a racist transfer of money from victimized minorities to privileged whites. Social Security is an example of traditional liberalism which is dying, replaced by newer forms of liberalism.