Before he ambushed and killed three Pittsburgh police officers in his Stanton Heights home, Richard Poplawski made a “hit list” of people he wanted to kill, including a police officer, a black, a Jew, his ex-girlfriend, and her parents. Richard Poplawski discussed a “hit list” on an Internet radio show in the weeks before he allegedly gunned down three Pittsburgh police officers in an ambush at his Stanton Heights home, according to a police affidavit. The hit list included a Pittsburgh police officer, a black, a Jew, his ex-girlfriend, her parents and neighbors’ pets, the affidavit states. Homicide investigators relied on statements provided by Edward Perkovic, 23, of Lawrenceville and his estranged girlfriend, Jocelyn Moffitt, 22, to get permission to search computers used by Poplawski and Perkovic for their radio show, Eddie and Po. The documents were filed this week with Allegheny County Common Pleas Judge Jeffrey A. Manning, who is presiding over Poplawski’s trial for the April 4 slayings. The affidavits indicate Poplawski was more deeply involved in white supremacist activities than previously disclosed. He posted material on the Web site Stormfront.org and frequently e-mailed racist content to his radio co-host, Perkovic told police.