A major drug raid tied to the ongoing crackdown around MacArthur Park has led to five more arrests. Federal prosecutors warned they are ramping up efforts to dismantle the open-air drug trade that has overtaken the neighborhood. The latest operation was announced by US Attorney Bill Essayli Friday, who said the arrests stemmed from a Thursday evening operation on May 14. The raid was conducted by Los Angeles Police Department Rampart Division narcotics detectives along the 600 block of Alvarado