In his Talking Points Memo, Bill O'Reilly said that these are tough times for social conservatives in America, particularly because of the scores of vicious political websites that try to destroy people with whom they disagree.

O'Reilly asserted that in the 2016 presidential race, Republican candidates are in the "smear zone," especially if they speak out against liberal causes.

He pointed out that GOP candidates Scott Walker, Mike Huckabee and Marco Rubio were all recently misquoted, marginalized and attacked for their comments about abortion, religion and climate change, respectively.

"These kinds of attacks have changed politics because the websites know few readers will fact-check the headline," O'Reilly said.

"It is very easy to marginalize anyone with strong opinions. And since the press is overwhelmingly left, it is conservatives who get branded as kooks and extremists," O'Reilly said.

He pointed out that a "socialist" like Elizabeth Warren is a woman of stature, while a pro-life political candidate who is skeptical of climate change and against gay marriage will be "brutally assaulted."

"Believe me, I've experienced this for 19 years. I know how vicious the game is," O'Reilly said. "But I can fight back. Others who are smeared cannot. Revolting situation that has affected our republic in a major way."

Watch the full Memo above.

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