Yes but be aware that you can be sued by individuals (non celebreties) that you accuse of being bigots and its up to you to prove beyond a reasonable doubt that they are. If they have said something about the Pople and you call them bigots, and they sue you, you have to prove a negative (i.e., that the Pope didnt do what they said) AND that they knew this. Better take your medicine and calm down.
Second, people who express themselves publicly and with vehemence are in a poor position to demand silence of their critics.
Third, defamation cases are notoriously disfavored in our courts.
Fourth, and most important, it is black letter law that truth is a complete defense to any charge of defamation: libel, slander, false light or whatever.