The Globe and Mail recently had a headline along the lines of "Trudeau ends cash for access fundraiser" when in fact he had done nothing of the sort... headlines can be very misleading.
I don't know what headlines you are reading but "Dangerous Faggot" most likely refers to one of the Breitbart editors, Milos Yiannopoulos, who is a very out gay man who did a speaking tour of US universities which he called the "Dangerous Faggot Tour"... if that is what the headline you saw is talking about then you have seriously misinterpreted its meaning. Perhaps you should consider that you may have misinterpreted all the headlines you've read there... just sayin'.
And to answer your question, no, a headline saying "dangerous faggot" is not racist.