After a federal agent killed an undocumented Mexican man in his van during a traffic stop in Houston on Tuesday, the government rushed to follow a familiar template. Just as it has after other shootings, the Department of Homeland Security released a statement insisting that the man, Lorenzo Salgado Araujo, had “weaponized his vehicle” against the officer, who then justifiably opened fire. DHS offered no evidence of this. But it appears three other people were in the van with the now-deceased ma