9:45 AM PT -- 5/28 -- Stephen Jackson is now calling for prosecutors to go for the death penalty for the main police officer involved in the death of George Floyd.
"I know we not gon' get the death penalty but I'm goin for it," Jackson said Thursday morning on The Breakfast Club.
"Because the only way that they can stop kiling us is if they see one of their own sitting at the chair and fry for something they did and knowing that could be them."
"We had to see it, the world had to see it, my brother die then the world has to see one of them die. That's the only way we gon' get justice."
Jackson also said he spoke with the mother of Floyd's 6-year-old daughter ... who says she's still so shaken up, she hasn't broken the news to their child.
4:04 PM PT -- Jackson is NOT happy with Denver Nuggets player Michael Porter Jr.'s comments on George Floyd's death ... telling the young star to "go sit yo young Privileged ass down."
MPJ faced backlash when addressing the Floyd incident on Wednesday when he tweeted, "As much as you pray for George family, gotta also pray for the police officer(s) who were involved in this evil."
He continued ... "As hard as it is, pray for them instead of hate them...Pray that God changes their hearts."
Jackson got wind of MPJ's words and spoke his mind shortly after, saying "Either u with us or against us. @MPJr not now bruh f*k dat."
"Rest Easy Twin I don’t have a prob with u Youngin ain’t no time for that. Easy to say that nobody dying close to u. Pick a side."
"My boy was doing what he was supposed to be doing and ya'll go and kill my brother, man."
Stephen Jackson spent Tuesday emotionally reflecting on his time with George Floyd -- a man the former NBA star says he called "twin" -- and he's now demanding justice for the 46-year-old after officers appeared to have killed him Monday.
Jackson says he spent his childhood in the same Houston, Texas circles as Floyd ... and claims the two were so close, he had just sent the guy clothes days before his death this week.
"Floyd was my brother," Jackson said. "We called each other twins, bruh. Everybody knows me and Floyd called each other twins. My brother was only out there in Minnesota, he was trying to change his life."
42-year-old Jackson says he's now on his way to Minnesota ... and he's promising to help find justice for George after a cop pinned him down with a knee to the neck and wouldn't let go.
"I can't let this ride, dawg," Jackson said. "Ya'll not going to be mad until it hits ya'll front door. Bullsh*t."
As we previously reported, Floyd died in Minneapolis, Minn. after officers responded to a call about a forgery in progress on Monday.
During the stop, officers held down George for several minutes ... despite the man telling cops he could not breathe.
The FBI is now investigating the incident ... while all four officers involved have been fired.