This timelapse shows "Millions March NYC" on 6th Avenue. More than 10,000 protested discrimination from police and the justice system.
And the killings of Eric Garner, Trayvon Martin and Michael Brown.
"Hands up, don't shoot! Hands up, don't shoot!" protesters chanted.
"Now, there were possibly tens of thousands by some estimates who took to the streets this afternoon, and a whole lot of police officers as well," CNN reported.
Crowd estimates from police and organizers differed.
"NYPD officer told me they estimate 12k protesters at today's #MillionsMarchNYC but protest organizer tells me their count is 50k," Mashable's Kari Paul posted to Twitter.
This video includes images from Getty Images.