The carotid hold is a form of chokehold that cuts off blood flow through the carotid arteries to the brain.
"At the end of the day, the carotid hold that literally is designed to stop people's blood from flowing into their brain. That has no place any longer in 21st century practices," Newsom said.
The governor said he is immediately instructing POST, the state's commission on Peace Officer Standards and Training, to stop training the practice. He added there was also legislation in the works to ban the carotid hold by law in California and he would sign it as soon as it was brought to his desk.
Chokehold restraints, which are different from carotid holds and cut off airflow through the windpipe, are already banned in California.
Newsom hinted his announcement is the first of more reforms to come. He said there needs to be statewide standards on how police do crowd control.
"Protesters have the right not to be harassed," the governor said. "Protesters have the right to protest peacefully. Protesters have the right to do so without being arrested, gassed, and shot up by projectiles."
RELATED: Gov. Gavin Newsom mourns the pain of the black community, addresses George Floyd protests
Newsom spoke at length about the systemic racism that affects black people across all sectors of society.
He spoke about the racist impact of mandatory minimum sentencing and the war on drugs, which has led to long prison sentences for nonviolent drug offenses.
"One thing we know about our criminal justice system is it's not blind. It discriminates based on the color of your skin. It discriminates on wealth," the governor said. "I don't think this. I know this. Our criminal justice system treats people that are rich and guilty better than it treats people that are poor and innocent."
ALSO: Community raises thousands of dollars for Oakland Black-owned businesses damaged during protests
"The black community does not need to change," Newsom said. "We need to change. We have a responsibility to change. Our institutions need to change."
Finally, he encouraged Californians to take a stand.
"Dante infamously said that the hottest place in hell is reserved for those in a time of moral crisis that maintain their neutrality. This is not a time to be neutral."
Take a look at the latest stories and videos about the investigation into George Floyd's death in Minneapolis and protests across the U.S.
RELATED STORIES & VIDEOS:
- Find resources to help with equality, justice and race issues
- Tips for parents about talking to kids about race and racism following the death of George Floyd
- In Their Own Voice: Young, black Bay Area residents react to the killing of George Floyd
- VIDEO: The best and worst moments from Bay Area protests
- Watch George Floyd protests live: Demonstrations, briefings planned in San Francisco Bay Area
- ABC7 Listens 'From Anger To Action: A Bay Area Conversation'
- Here's which Bay Area cities are under curfew and what it means
- Jamie Foxx, Rev. Amos Brown speak at peaceful kneel-in at San Francisco City Hall
- 'Rioting is the language of the unheard': Host, comedian W. Kamau Bell discusses racism in America
- SF mayor delivers powerful message at protest with Jaime Foxx
- San Francisco police chief recalls time as LAPD officer during 1992 Rodney King riots, asks residents to 'stay at home'