“The Lake,” Friday, Prime Video.

“The Lake” begins with the very white, unquestioningly gay Justin (Jordan Gavaris) trying to buy politically correct ice cream for his mixed-race biological daughter, Billie (Madison Shamoun), who was adopted by black parents and identifies accordingly. Chocolate? “Pandering,” he says to himself. Vanilla? “Probably triggering.” Rainbow pops? “Too on the nose.” In the end, no ice cream.