As people streamed by the police tape this morning at a North Side biker club where two people were killed overnight and a third was injured, one woman went a few steps further and crossed it. She had heard her cousin was one of the people dead in a 3 a.m. shooting at the afterhours club, where police said 50 to 100 people were gathered. Authorities have not yet released their identities. A heated exchange began after the police officer, who was white, ordered the woman, who was black, back behind the line. "I'm just asking a goddamn question," said the woman. "You can't just walk wherever you want to," said the officer. "I mean, if you're family you should be able to cross," yelled the woman, fighting tears as he walked away. "I don't give a s--t if you're family," he retorted. "I know you don't," she said. "I know you don't. If I was an officer I would have said the same thing about your family and that's dirty as hell." "Well, take your dirty self on out of here," he said, waving. "Bye bye." It's not uncommon to hear North Side citizens share their distrust for police, which plays a part in the difficulty officers sometimes have in getting residents to cooperate in cases. "We're not allowed to swear at people," said Sgt. Steve McCarty, a police spokesman, when told of the incident. He declined to comment further, saying he wasn't at the scene.