Washington (AFP) – An attacker shot and killed at least six people at a Walmart late Tuesday in the US state of Virginia, police said, adding the single shooter suspect is also dead. The mass shooting in the city of Chesapeake comes just before Americans celebrate the Thanksgiving holiday and follows a weekend gun attack at an LGBTQ club in Colorado that left five people dead. “Chesapeake Police confirm 7 fatalities, including the shooter, from last night’s shooting at Walmart on Sam’s Circle,” the city confirmed on its Twitter account. Chesapeake Police Department officer Leo Kosinski had e…