Two family members of people shot by police were in Ohio to protest the death of Walker, who was shot and killed by police last week.
Mark Richards also slammed Donald Trump Jr. as "an idiot" after he announced a gun organization planned to award Rittenhouse an AR-15.
“No verdict will be able to bring back the lives of Anthony Huber and Joseph Rosenbaum, or heal Gaige Grosskreutz’s injuries," said Democrat Tony Evers.
Jurors are set to begin deliberating after two weeks of testimony in which they were given starkly different portrayals of Rittenhouse's actions.
Gaige Grosskreutz, the protester and volunteer medic who survived after Kyle Rittenhouse shot him on the streets of Kenosha, took the stand.
Blake was shot in the back and paralyzed by police officers in Kenosha, Wisconsin, last year.
The shooting left Blake paralyzed from the waist down and sparked several nights of protests.
The Illinois man, who is accused of killing two people during the protests that followed the police shooting of Jacob Blake in Wisconsin, will go on trial in November.
Officer Rusten Sheskey, who shot and paralyzed Jacob Blake, has returned to work without any disciplinary action.
Officer Rusten Sheskey came back to active duty on March 31 after shooting and paralyzing the 29-year-old Blake in August.