If you want an unflinching insight into the rotting core of America, the neglected and left-for-dead rural and backwoods regions of our country, take the 1 hour and 42 minutes to watch “Hell or High Water.” David McKenzie directs this neo-Western/heist/thriller, with the backdrop to the action providing a portrait of a Texas still ravaged by the 2008 financial collapse. The political and socioeconomic undertones are less than subtle. As our redneck Robin Hoods drive beat-up old cars through bleak desert landscapes the camera lingers on billboards for payday loans and other predatory lending advertisements – the vultures circling the carcass of a starved cow. “Hell or High Water” is a fresh take on an old genre and a brilliant depiction of the soul-crushing nature of poverty. The audience isn’…