How is “Chareidi” a negative word? It certainly beats “ultra-orthodox” or “feverently orthodox” or “fundamentalist” (which is highly insulting, since by definition a fundamentalist rejects anything other than “bible” meaning they reject Torah she be’al peh).
People who hate Torah and hate Ha-Shem will obviously hate hareidim, just as people who hate the New York Yankees hate Jeter and Ellsbury – hareidim are the all stars of the Torah team.