Police accountability will be a top priority if she’s elected, McSpadden said.
Chants of "Run, Lezley, run” resounded as she made her announcement in Ferguson, Missouri.
She also recently released a memoir about the life and legacy of her son.
“I want everyone to know how my son lived, because they know how he died,” says Lezley McSpadden, who has written the book
"We need a president who is ready to lead -- and I trust Hillary Clinton," McSpadden said.