The gunman killed seven people in a 2022 Independence Day parade in suburban Chicago and was sentenced to not guilty Thursday.
Robert Crimo III, 23, pleaded guilty to murder and attempted murder in March.
After two days of hearing testimony, Judge Victoria Rossetti put seven back-to-back life sentences on each murder victim and sentenced him to 50 years for attempted murder.
Crimo opened fire at the crowd to celebrate the Fourth of July at Highland Park, 30 miles (50 kilometers) north of Chicago.
The victims of the shooting ranged from an eight-year-old boy, from a waist paralysis to a young couple and an 88-year-old man.
The video captures parade performers and attendees scramble for safety.
Crimo then fled the scene, leaving his semi-automatic rifle behind.
After the hunt, authorities arrested him in neighboring Wisconsin that day.
Survivors of the mass shooting told their stories in emotional testimony on Wednesday. Although Crimo did not appear in court, many witnesses spoke directly to him, calling him “coward” and “monster.”
The person killed in the shooting was Katherine Goldstein, 64. Jacquelyn Sundheim, 63; Stephen Straus, 88; Nicolas Toledo-Zaragoza, 78; Eduardo Uvaldo, 69; and married Kevin McCarthy, 37, and Irina McCarthy, 35.
More than 40 other people were injured.
Crimo initially pleaded not guilty to the charges, but changed his plead guilty in March.
His father, Robert Crimo Jr., served in the county jail for about a month and won an early release of 60 days in prison for good conduct.
