“Eleven years after Massachusetts became the first state to allow same-sex couples to marry, the Supreme Court on April 28 will hear arguments about whether to extend that right nationwide. The case comes amid a wave of gay marriage legalization: 28 states since 2013, and 36 overall. Such widespread acceptance in a short amount of time isn’t a phenomenon unique to gay marriage. Social change in the U.S. appears to follow a pattern: A few pioneer states get out front before the others, and then a key event—often a court decision or a grassroots campaign reaching maturity—triggers a rush of state activity that ultimately leads to a change in federal law.” (emphasis added)
*Follow the link for animated charts illustrating the pace of social change on hot-button issues in America.