Alex Pretti's Parents Demand Answers Nine Months After Fatal Shooting

• Alex Pretti was fatally shot by a federal agent in Minnesota in January.
• His parents have not received any information from the federal government regarding the investigation.
• The parents held a news conference to express their frustration and demand answers.
• They accuse the federal government of shielding Alex's killers.
• The Department of Justice has not responded to the family's concerns.