Gus Van Sant‘s “Milk” scored a huge Thanksgiving opening, according to initial estimates from Rentrak early this afternoon. The Focus Features release, a biopic of gay rights activist Harvey Milk, grossed $1,381,484 on just 36 screens over the three-day weekend, for a $38,375 average.  This ranks as the highest opening weekend for any film released in the range of 30-40 theaters (a record previously held by Focus’ “Atonement”). Since opening last Wednesday, “Milk” has taken in an impressive $1,866,079.