(CNN) — Alex Stone knew he had no other choice.
The police officer in Clatskanie, Oregon, filed a formal complaint when he allegedly heard the city's police chief making racist comments.
"I had to do this," he told CNN affiliate KOIN, but he said the aftermath hasn't been easy.
Advertisement - story continues below
"I've received death threats, a tire flattened with a nail on my driveway," he said. "My kids, they're afraid to go outside."