The massacre was the result of a new policy which Trujillo called the "Dominicanisation of the frontier". Place names along the border were changed from Creole and French to Spanish, the practice of Voodoo was outlawed, quotas were imposed on the percentage of foreign workers that companies could hire, and a law was passed preventing Haitian workers from remaining after the sugar harvest. Another example of repression and prejudice came about a year after Trujillo's death, on December 28, 1962, when the mainly Dominico-Haitian peasant community of Palma Sola, which challenged the racial, political, and economic situation of the country, was bombarded with napalm by the Dominican Air Force.