FreeRepublic is here to supposedly act as a forum for those who love the Constitution and the Republic in which we live. It does not have a secondary heading that says "except for you Catholics". Where Catholics live in large concentrations we rarely encounter the kind of hostility that comes out on internet forums like this one. And encountering the hostility means making a choice to fight it or to roll over and play dead.
"Getting used to it" or "rolling over and playing dead" is not the answer. And if you recognize that most of the world is "anti-Catholic" are you suggesting that we should shut up and accept the back of the bus or second-class citizenship?