AURORA, Colo. -- The Rev. Jesse Jackson is visiting Aurora to meet with theater shooting victims and renew his call for a ban on assault weapons.

Jackson visited the apartment building of James Holmes, who is accused in the mass shooting, and said Thursday it shouldn't be legal for someone to be able to arm himself more heavily than police.

Jackson planned to meet privately with a victim's family and to visit a memorial outside the theater where 12 people were killed July 20.

Jackson dismissed arguments that debating gun control wrongly makes the tragedy political. He says it's time to go from "mourning to marching" to address gun violence.

He says even people legally carrying concealed weapons wouldn't have a chance against a shooter armed with a semi-automatic weapon.

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  • Jesse Jackson Discusses Gun Control During Visit To Aurora, CO

    AURORA, CO - JULY 26: Civil rights activist Reverend Jesse Jackson (3rd R) speaks during a news conference outside of the apartment building where accused murderer James Holmes lived July 26, 2012 in Aurora, Colorado. James Eagan Holmes, 24, is accused of killing 12 people at a screening of the new 'The Dark Knight Rises' film July 20, at the Century 16 movie theater in Aurora, Colorado. (Photo by Joshua Lott/Getty Images)

  • Jesse Jackson Discusses Gun Control During Visit To Aurora, CO

    AURORA, CO - JULY 26: Civil rights activist Reverend Jesse Jackson (2nd R) speaks during a news conference outside of the apartment building where accused murderer James Holmes lived July 26, 2012 in Aurora, Colorado. James Eagan Holmes, 24, is accused of killing 12 people at a screening of the new 'The Dark Knight Rises' film July 20, at the Century 16 movie theater in Aurora, Colorado. (Photo by Joshua Lott/Getty Images)

  • Jesse Jackson Discusses Gun Control During Visit To Aurora, CO

    AURORA, CO - JULY 26: Civil rights activist Reverend Jesse Jackson walks outside of the apartment building where accused murderer James Holmes lived before speaking to reporters July 26, 2012 in Aurora, Colorado. James Eagan Holmes, 24, is accused of killing 12 people at a screening of the new 'The Dark Knight Rises' film July 20, at the Century 16 movie theater in Aurora, Colorado. (Photo by Joshua Lott/Getty Images)

  • Jesse Jackson Discusses Gun Control During Visit To Aurora, CO

    AURORA, CO - JULY 26: rights activist Reverend Jesse Jackson (2nd R) looks at the apartment building where accused murderer James Holmes lived before speaking to reporters July 26, 2012 in Aurora, Colorado. James Eagan Holmes, 24, is accused of killing 12 people at a screening of the new 'The Dark Knight Rises' film July 20, at the Century 16 movie theater in Aurora, Colorado. (Photo by Joshua Lott/Getty Images)

  • Jesse Jackson Discusses Gun Control During Visit To Aurora, CO

    AURORA, CO - JULY 26: Civil rights activist Reverend Jesse Jackson speaks to reporters outside of the apartment building where accused murderer James Holmes lived July 26, 2012 in Aurora, Colorado. James Eagan Holmes, 24, is accused of killing 12 people at a screening of the new 'The Dark Knight Rises' film July 20, at the Century 16 movie theater in Aurora, Colorado. (Photo by Joshua Lott/Getty Images)

  • Jesse Jackson Discusses Gun Control During Visit To Aurora, CO

    AURORA, CO - JULY 26: Civil rights activist Reverend Jesse Jackson speaks during a news conference outside of the apartment building where accused murderer James Holmes lived July 26, 2012 in Aurora, Colorado. James Eagan Holmes, 24, is accused of killing 12 people at a screening of the new 'The Dark Knight Rises' film July 20, at the Century 16 movie theater in Aurora, Colorado. (Photo by Joshua Lott/Getty Images)

  • Jesse Jackson Discusses Gun Control During Visit To Aurora, CO

    AURORA, CO - JULY 26: Civil rights activist Reverend Jesse Jackson walks outside of the apartment building where accused murderer James Holmes lived before speaking to reporters July 26, 2012 in Aurora, Colorado. James Eagan Holmes, 24, is accused of killing 12 people at a screening of the new 'The Dark Knight Rises' film July 20, at the Century 16 movie theater in Aurora, Colorado. (Photo by Joshua Lott/Getty Images)

  • Jesse Jackson Discusses Gun Control During Visit To Aurora, CO

    AURORA, CO - JULY 26: Civil rights activist Reverend Jesse Jackson speaks during a news conference outside of the apartment building where accused murderer James Holmes lived July 26, 2012 in Aurora, Colorado. James Eagan Holmes, 24, is accused of killing 12 people at a screening of the new 'The Dark Knight Rises' film July 20, at the Century 16 movie theater in Aurora, Colorado. (Photo by Joshua Lott/Getty Images)

  • Jesse Jackson, Thomas Mayes

    Rev. Jesse Jackson, center, with Pastor Thomas Mayes, right, and others, walks near the apartment where accused killer James Homes lived, Thursday, July 26, 2012 in Aurora, Colo. Twelve people were killed and over 50 wounded in a shooting attack early Friday at the packed theater during a showing of the Batman movie, "The Dark Knight Rises." Police have identified the suspected shooter as James Holmes, 24. (AP Photo/Alex Brandon)