CHICAGO—Chicago Mayor Lori Lightfoot on Friday unveiled a “whole-of-government” safety plan where law enforcement, city services, and community organizations work together to stem a likely summer crime spike, especially in the neighborhoods plagued by gun violence. The announcement came the day before Memorial Day weekend, which has been the unofficial start of summer carnage in Chicago for decades. Last year, Chicago saw the deadliest Memorial Day weekend in five years, with nine people shot dead and 30 people injured. “When I talk about a whole-of-government approach,” Lightfoot, a Democrat, said at a press conference, “[I] mean the fire department, the police department, the libraries, the parks, CPS (Chicago Public School system,) DFSS (Chicago Department of Family and Support Services,) and Chicago Department of Public Health.” Nonprofit community organizations and faith leaders are also invited to join the efforts by providing young black men meaningful summer activities as an alternative to violent …