Through TWO, Woodlawn residents challenged the redevelopment plans of the University of Chicago. Alinksy claimed the organization was the first community group not only to plan its own urban renewal but, even more important, to control the letting of contracts to building contractors. Alinsky found it "touching to see how competing contractors suddenly discovered the principles of brotherhood and racial equality." Similar "conversions" were secured from employers elsewhere in the city with mass shop-ins at department stores, tying up bank lines with people exchanging pennies for bills and vice versa, and the threat of a "piss-in" at Chicago O'Hare International Airport.