By Ben Brewer

Activists protested for a third day in Madison, Wisconsin, on Sunday over the fatal shooting of an unarmed black teenager by a white policeman, the latest in a string of killings that have intensified concerns of racial bias in U.S. law enforcement.

More than 100 people angry over the death of Tony Robinson Jr. marched through the streets of Madison toward the capital building on Sunday evening, carrying signs, beating drums and chanting “The people united will never be defeated.”

Earlier scores of people who took part in a sign-making event designed to involve children in the civil action rallied outside the apartment home where Robinson died.

Robinson, 19, was shot in Madison, Wisconsin’s capital, on Friday evening after Officer Matt Kenny responded to calls about a man dodging cars in traffic who had allegedly battered another person, Police Chief Mike Koval said.

Kenny, 45, followed the suspect into an apartment, where the officer was struck in the head, according to Koval. Kenny then shot the unarmed teen, who died later in a local hospital.

Last year, the deaths of unarmed black men in Ferguson, Missouri, and New York City triggered a wave of demonstrations against the use of excessive force by law enforcement officers.

Kenny is on paid administrative leave while the Wisconsin Department of Justice conducts an investigation.

Read More Wisconsin capital marked by third day of protests after police shooting – Yahoo News.