A small group of anti-police brutality protesters stage a die-in on the Blue Line tracks at Washington Boulevard and Broadway in downtown Los Angeles Tuesday, April 14, 2015.

DOWNTOWN LOS ANGELES (KABC) -- At least fifteen people were arrested after they blocked the Blue Line tracks at Washington Boulevard and Broadway in downtown Los Angeles for about two hours Tuesday during a protest against police brutality.Members of the Stop Mass Incarceration Network began their small protest in front of LAPD headquarters at First and Main streets at about 3:20 p.m. Tuesday.The Blue Line was suspended between Grand Avenue and Washington Boulevard when about 20 to 30 Walter Scott supporters stopped on the tracks, halting traffic during rush hour."We're shutting things down... we're not allowing business as usual. People can't go along with their normal day and not recognize that there's two to three people being killed by the police every single day," a protester named Diego said.Scott was shot and killed by North Charleston police Officer Michael Thomas Slager in South Carolina on April 4. Video captured the moments leading up to the fatal shooting that has sparked outrage as the latest example of a white police officer killing an unarmed black man. The shooting itself was captured by an eyewitness on his iPhone and provided the impetus for the officer to be charged with murder and fired.Metro riders were urged to use the Silver and Green lines as alternate routes between downtown L.A. and South L.A. Those arrested were expected to be booked on misdemeanor charges for unlawful assembly.The protest was among several held in U.S. cities in the wake of police shootings of unarmed people. The protesters referred to the deaths Scott in South Carolina, Eric Garner in Staten Island, and Michael Brown in Ferguson, Mo., among others.The marches in New York City, Los Angeles, Seattle, Oakland and Berkeley, California, and other cities were organized by the Stop Mass Incarceration Network, using the hashtag #ShutDownA14 to spread their message on social media.