Numerous polls of the media have shown that better than 80% of them are liberals by their own accounts. (ie Media Research Council etc.) This is why Democrats get more favorable coverage than Republicans. This is also why you never get to see the thousands of stories each year of people who use guns to stop a crime and protect their own lives.
Here is another example, the media praised Hollywood for supporting Roman Polanski, a film producer who gave a 13 year old girl qualudes and then raped her. After all he was an artist and admired by the left. However, any rumor about the Church is treated as fact and represented as indicative of the entire clergy. Why? The left hates the Church and thiat is their chance to make you hate the Church too.