When the cameras roll inside the Black church, the results can be unpredictable — sometimes inspiring, sometimes explosive. But few moments have lit up social media this fall like the now-viral video from Bishop Marvin Winans’ Perfecting Church in Detroit. In that clip, recorded during the congregation’s annual “Day of Giving,” Bishop Winans appears to scold a church member who stepped forward with a $1,235 donation after he called for $2,000 pledges. “That is only $1,200 …