in just the last 24 hours, protesters and stephon clark's family crashing a city council meeting. demonstrators blocking an nba game. abc's kayna whitworth in sacramento tonight. >> black lives matter! >> reporter: tonight, city leaders in sacramento urging for calm after a week of unrest following the death of stephon clark. >> everybody, take out your cell phone. take out your cell phone. does this look like a gun? >> reporter: tuesday, the city council meeting interrupted several times. >> stephon clark! stephon clark! >> reporter: clark's brother emerging from the crowd, jumping onto the mayor's desk. outside, fans prevented, for the second time in a week, from entering the sacramento kings arena. >> we are committed to continuing to do everything in our power to maintain the peace, while we pursue justice. >> reporter: demonstrators calling for justice, after unarmed stephon clark was shot at 20 times, killed in his grandmother's backyard by officers who were responding to reports of vandalism.