MINNEAPOLIS – Grief and anger turned to violence Wednesday night as Minneapolis saw another day of protests following the death of George Floyd, a 46-year-old black man who was pinned down by a white police officer who held his knee to Floyd's neck.

Demonstrators gathered earlier in the day near the local police precinct, and soon video on social media showed people smashing windows, looting a nearby Target and buildings on fire.

It was the second night of tense protests following Floyd's death. The city's mayor and Floyd's family have called for the arrests of the officers involved in his death, and the federal authorities promised Thursday a "robust criminal investigation." The four officers were fired shortly after video of the encounter spread on social media showing Floyd struggling and telling the officers he couldn't breathe.