Jeff Swensen/Getty, Johner Images/Getty, Amaia Castells/Getty, Luke Chan/Getty, Lars Stenman/Getty, Tyler Le/BIAs a parent, you want to do your best. You focus on your child, ensuring they're emotionally safe, properly socialized, and academically challenged — anything to set them up for success.It's hard to fathom a dark outcome: that your child would grow up to assassinate someone, or be accused of doing so.That's what Luigi Mangione's parents experienced last week, as the 26-year-old accused killer of UnitedHealthcare CEO Brian Thompson was charged with murder as an act of terrorism.