With the political rhetoric on both sides of the presidential contest reaching new levels of vitriol, Hillary Clinton’s campaign has released a new ad ahead of Tuesday’s primaries seeking to sow “a little hope and love now.”

On Screen

The voice of Andra Day rises from a chorus without instrumental backing, setting the tone for the 60-second spot: “Spread a little hope and love now.”

Scenes from the Clinton campaign flicker in and out of focus: the candidate doling out high-fives, striding toward a stage, and supporters looking pensive at her events. Big block text with broad platitudes overlay the scenery, calling to “break down barriers.”

Ms. Day continues with the second part of the chorus: “We’ll walk it out together.” Mrs. Clinton is shown with Geneva Reed-Veal, the mother of Sandra Bland, who was found hanged in a Texas jail cell after a routine traffic stop last year, and Representative John Lewis, Democrat of Georgia.