Discuss the issues all you want, but do not make it personal.
Also, to help prevent flame wars, please post the entire sentence when claiming that it is false - emphasing the phrases you claim are false whether separate or in combination. For instance:
Catholic leaders are using the common ground of praying TO Mary and worshiping Fatima, the spiritually wayward daughter of Mohammad to bring about “peace and understanding”.
For a Catholic to object to specious lies about his or her faith is slapped down as "making it personal".
No other confession is treated that way on FR. Mormons aren't. Jews certainly aren't.