Gov. Gavin Newsom grinned like Cheshire at civil rights icon Jesse Jackson’s public memorial service Friday – treating it as a campaign event as the rumored 2028 presidential hopeful schmoozed with Democratic heavyweights including Presidents Obama and Clinton. The California governor was pictured working the room and snapping selfies with Democratic party elites, as thousands of people gathered at a church on Chicago’s South Side to pay a final public tribute to Jackson. In one telling moment, Obama, who was front row at the event, turned around and pointed directly at Newsom, who’s also been on the publicity trail for...