A brutal beating. Cries for his mom. 23-minute delay in aid. Here are the key revelations from the Tyre Nichols police videos

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The newly released videos of Tyre Nichols police  beating captured the brutality that his family and authorities had already foreshadowed: He was punched and kicked while being restrained. He pleaded to go home and repeatedly yelled for his mom.

And after the beating, while Nichols lay slumped and motionless against a car, officers walking around on scene ignored the 29-year-old.

The videos consist of three shorter body camera clips and one roughly 31-minute video taken from a utility pole camera, which appears to capture most of the violence that unfolded just steps from Nichols' home in Memphis.KNOW MORE

The videos show portions of both the initial traffic stop on the night of January 7 and a second altercation just minutes later, after Nichols fled the first location on foot. Nichols required hospitalization after the encounter and died on January 10.

Video shows Tyre Nichols calling for his mother, beaten by officers now charged in his death

What you're seeing is a fairly significant number of officers who are failing at arrest and control tactics and making up for it with brutality," said CNN Chief Law Enforcement and Intelligence Analyst John Miller.

Law enforcement analysts who viewed the clips were troubled by a range of actions -- and inactions -- during the encounter, from the beating by a group of officers to the length of time it took for someone to render aid to a motionless Nichols.