Brown, who was unarmed when he was killed, became an instant symbol of racial injustice as protesters flooded into the streets after his death. Civil rights leaders said the shooting in this predominantly black St. Louis suburb revived long simmering questions about police treatment of minorities across the country.
During more than a week of demonstrations - marred by Molotov cocktails and billowing clouds of tear gas - Brown's name and face were frequently visible on T-shirts and picket signs. Some also chanted: "I AM MIKE BROWN!"
Even as the details of what happened during the Aug. 9 confrontation remain unclear, a portrait has emerged of the 18-year-old Brown.
Family and friends recall a young man built like a lineman - 6-foot-3, nearly 300 pounds - with a gentle, joking manner. An aspiring rapper who dubbed himself 'Big Mike.' A fan of computer games, Lil Wayne, Drake, the movie, "Grown Ups 2" and the TV show, "The Family Guy." A kid who was good at fixing things. A struggling student who buckled down to finish his courses, don his green graduation gown with red sash and cross the stage in August to pick up his diploma.
"My fondest memory of Mike is seeing a big kid coming in with a smile on his face, his headphones on and a big can of iced tea ... and say, 'Hey, Coach K, What's going on? .... What do you need me to do this morning?'" recalls Charlie Kennedy, a Normandy High School health and physical education teacher. He says Brown was the kind of kid who'd hold court with "four or five kids around him, cutting up and having a good time."
Kennedy became acquainted with Brown while running a credit recovery program the young man was enrolled in that allowed him to catch up so he could graduate with his class. Brown, he says, could be led astray by kids who were bad influences but by spring, he became focused on getting his degree.
Kennedy also would bring in recording equipment Brown could use for rapping - he wanted to perform and learn a trade to help support himself. "His biggest goal was to be part of something," the teacher adds. "He didn't like not knowing where to fit in life. ... He was kind-hearted, a little kid in a big body. He was intimidating looking, but I don't think he ever was disrespectful to me."
Brown loved music even as a young child. Ophelia Troupe, his art teacher for five years in elementary school, remembers a reserved, polite little boy - he'd always respond 'yes ma'am' or no ma'am.' He kept to himself but lit up when she'd play her son's beats in class as a reward if the students behaved.
"Michael was the one to say, "Be quiet so Ms. Troupe can play the beats,'" she recalls.
Troupe hadn't seen Brown for several years until they crossed paths at his high school graduation. After the ceremony, they hugged and he told her he'd like to be a rapper and asked if her son would work with him.
Slightly more than a week later, Brown was shot while walking down the street with a friend. Police have said a scuffle broke out with Officer Darren Wilson after he asked the two young men to move. Some witnesses have reported seeing Brown's arms in the air - an act of surrender. An autopsy concluded he'd been shot at least six times.
Ferguson police identified Wilson at the same time they released a video of an alleged theft showing Brown, accompanied by his friend, snatch some cigars in a convenience store just minutes before he was killed. In the video, Brown is shown grabbing a clerk by the shirt and forcefully pushing him into a display rack.
Brown's family angrily denounced that video as character assassination.
They've portrayed Brown as "a gentle giant," who liked to post photos on his Facebook page of himself with young relatives, a kid who tried football his sophomore year but abandoned the idea before his first game, fearing he might hurt someone.
"He was funny, silly," his father, Michael Brown Sr., recently said. "Any problems that were going on or any situation - there wasn't nothing he couldn't solve. He'd bring people together."
Tim Sneed, a 23-year-old neighbor of Brown's grandmother, says the young man was so low-key he seemed almost invisible. "When he came to my house you wouldn't even notice he was there," he says. "That's how quiet he was."
Brown had been staying at the apartment of his grandmother, Desuirea Harris, this summer. She said Brown was excited about his future.
"My grandson never even got into a fight," she says. "He was just looking forward to getting on with his life. He was on his way."
Brown was preparing to attend Vatterott College, where he planned to study to become a heating and air conditioning technician.
Kennedy, his teacher, says Brown had to break free from being around kids who "caused him to be in the wrong place at the wrong time a lot of times. .... He had been around too many thugs."
After the two had many talks, Kennedy says, Brown became more serious and was the first one at school at 7 a.m. "Mike was getting ready to do something with his life," he adds.
As friends and family now prepare for Brown's funeral, a memorial stands on Canfield Drive at the site of the shooting. A sign reads: "Hands Up, Don't Shoot, Aug. 9, 2014, RIP Michael Brown."
Brown's great uncle, pastor Charles Ewing, who will deliver the eulogy, remembers a conversation he had with his nephew.
"He said, 'One day the whole world is going to know my name.' Isn't that something? Not knowing that this was going to happen, and that's what touched me - 'the whole world will know my name.' "