"I can't believe this is really happening now, and here," Parker said.
Protesters gathered in downtown Allentown today for a protest dubbed "Demands Will Be Met," with plans to march to Allentown City Hall and police department headquarters.
The local Black Lives Matter group issued a list of demands, including the release of any police bodycam video of the incident, the suspension of the officers involved, the name and condition of the man, the establishment of a regional criminal justice review board and a reallocation of police funding.
The bystander video, shot from a passing vehicle and posted on social media, shows Allentown officers restraining the man on the ground outside the emergency room of the Sacred Heart Campus of St Luke's Hospital.
An officer had his elbow on the man's neck before switching to a knee to hold him down while other officers restrained his arms.
The man does not appear to be resisting during the video.
Police said officers were outside the hospital for an unrelated matter when they saw a man staggering in the street, vomiting and stopping in the driveway of the ER.
The man began to yell and spit at officers and hospital staff, the statement said, adding the man was "noncompliant which required officers to restrain" him.
The American Civil Liberties Union of Pennsylvania tweeted that the police department's "appalling excuse for an officer illegally placing his knee on a man's neck is that he was in mental distress and being 'non-compliant.' Police should NOT be first responders to those in a mental health crisis."
Lawyer Benjamin Crump, who represents Floyd's family, tweeted the video of the Allentown incident, writing that the restraint used by the unidentified officer is "exactly what led to #GeorgeFloyd's death." Crump demanded the officer's name.
It's unclear from the video how long the officer had his knee on the man's head and neck area, or whether the other two officers in the video sought to intervene to push the officer's knee off.
The man was treated at the hospital and released.
Police have not released the name or race of any individuals seen in the video. Community advocates said they were trying to identify the man in the video to offer support.
"During a health crisis, whatever it was, when he should've been given support, instead he was criminalised and he received a knee to his neck," said Hasshan Batts, executive director of Promise Neighbourhoods of the Lehigh Valley, an Allentown community group.
Police have said their internal investigation is moving swiftly, and the department plans to release additional video later this week. The Lehigh County district attorney's office assigned two detectives to the internal probe and planned to issue findings later this week.
A St Luke's spokesperson said the hospital has turned its own video over to police.
- AP