Carranza then pivoted against the Americans .
Carranza then accused them of a punitive invasion ; a confrontation with a mob in Parral on April 12 resulted in two dead Americans and six wounded , plus hundreds of Mexican casualties .
Carranza then pivoted against the Americans and accused them of a punitive invasion ; a confrontation with a mob in Parral on April 12 resulted in two dead Americans and six wounded , plus hundreds of Mexican casualties .