Fox News commentator Gianno Caldwell is calling out the Chicago Police Department over his brother’s unsolved killing — saying cops in the Windy City “failed my family” a year after his younger sibling was randomly shot dead.

Caldwell, 36, told The Post Sunday that cops have repeatedly blown him off as he’s sought answers in the June 24, 2022, bystander shooting death of 18-year-old Christian Beamon.