A gold plaque hangs next to a bullet hole in the Sikh temple in Oak Creek, Wis., where a lone gunman killed six worshippers and injured three others last August. It is engraved with the words, “We Are One.”

“It frames the wound,” says Pardeep Kaleka, son of former temple president Satwant Singh Kaleka, who died in the massacre. “The wound of our community, the wound of our family, the wound of our society.”

In the past week, that wound has been ripped open with shocking ferocity.

In what has become sickeningly familiar, gunmen opened fire on innocents in what should be the safest of places — first, at a shopping mall in Oregon, and then, unthinkably, at an elementary school in Connecticut.