REUTERSLouisiana Gov. Bel Edwards on Thursday described the three fires that destroyed predominantly black churches in rural Louisiana as an “evil act” committed by the son of a sheriff’s deputy.Holden Matthews was arrested Wednesday on three counts of simple arson for fires that on destroyed the churches in St. Landry Parish over ten days. The fires were set on March 26, April 2, and April 4, and destroyed St. Mary Baptist Church, Greater Union Baptist Church, and Mount Pleasant Baptist Church, respectively. Matthews, 21, was booked into jail Wednesday evening.Louisiana State Fire Marshal “Butch” Browning, at a Thursday morning press conference, called the fires “an attack on our God and our religion.”“In my career, I have never seen such a spiritual mission that has come home so quickly,” said Browning, who noted that Matthews’ arrest was quick in part because “we felt that other crimes were imminent.”FBI agent Eric J. Rommal, also at the press conference, said the bureau is inv...