Demonstrators vow to sustain momentum until change happens

People hold signs as they listen to a speaker in front of city hall in downtown Kansas City, Mo., Friday, June 5, 2020, during a rally to protest the death of George Floyd who died after being restrained by Minneapolis police officers on May 25. (AP Photo/Charlie Riedel)

WASHINGTON — Protesters stirred by the death of George Floyd vowed Friday to turn an extraordinary outpouring of grief into a sustained movement as demonstrations shifted to a calmer, but no less determined focus on addressing racial injustice.