In compelling debut 'Winter Counts,' Native American culture meets vigilante justice

“Winter Counts” by David Heska Wanbli Weiden; Ecco (336 pages, $27.99)———South Dakota’s Rosebud Indian Reservation provides an evocative background for this compelling debut about Virgil Wounded Horse, who metes out vigilante justice as an enforcer, taking up the mantle from the tribal police’s limited powers and the federal government that only investigates murders on the reservation.While Virgil has many of the traits common too often employed in thrillers — he’s cynical, anti-social and has battled the bottle — David Heska Wanbli Weiden elevates “Winter Counts” with a provocative look at cu…