Trump's targeting of Chicago doubles down on previous threats to take federal action against cities led by Black mayors.

This week in history: MLK Jr. takes on Chicago’s slums In February 1966, Martin Luther King Jr., who was born this week on Jan. 15, came to the aid of five families living in a slum on the West ...

Of the estimated 4 billion people currently living in urban areas worldwide, perhaps as many as a billion reside in slums. As urbanization picks up, cities around the world have struggled to keep up ...

Kilgubbin won’t be found on modern-day maps of Chicago, but there once was a place known by that name — a settlement of Irish immigrants on the city’s North Side. In the 1850s and 1860s ...

In the 1850s and 1860s, Kilgubbin was often mentioned in the pages of the Tribune and other Chicago newspapers. The name became symbolic of slums where poor Irish immigrants lived in ramshackle ...

LIFE.com remembers a series of photographs made in Chicago in 1954 and featured in LIFE in the spring of 1955, focusing on what the magazine called the "encroaching menace" of the city's slums.

Chicago Slums and the Long Shadow of Lead Paint The U.S. homicide rate hit a 50-year low last year and violent crime hit a 40-year low in 2010, despite the terrible economy.