Cooper became a journalist, a political columnist, then founder of Trans Urban News Service and the City Sun, a feisty Brooklyn-based weekly that published from 1984 to 1996. Whether the stories were about Mayor Koch or Rev. Al Sharpton, Howard Beach or Crown Heights, Tawana Brawley's dubious rape allegations, the Daily News Four trial, or Spike Lee's filmmaking career, Cooper's City Sun commanded attention and moved officials and readers to action.
Cooper's leadership also gave Brooklyn--particularly predominantly black central Brooklyn--an identity. It is no accident that in the twenty-first century the borough crackles with energy. Cooper fought tirelessly for the community's vitality when it was virtually abandoned by the civic and business establishments in the mid-to-late twentieth century. In addition, scores of journalists trained by Cooper are keeping his spirit alive.