A coalition of pro-life organizations and two members of Congress started a campaign Wednesday demanding the media increase its coverage of the country's largest annual protest, the March for Life.

The 17-group coalition is led by the Alliance for Fair Coverage of Life Issues and is urging the media to provide adequate coverage of the pro-life march, which will take place Friday on the 43rd anniversary of the Supreme Court's Roe v. Wade decision that legalized abortion.

"The liberal national media routinely dismiss one of the largest public demonstrations that takes place in America, the annual March for Life to protest the anniversary of the Roe v. Wade Supreme Court decision," said Rep. Lamar Smith, R-Texas, chairman of the Media Fairness Caucus in Congress.

Last year's March for Life brought 200,000 people to Washington, but despite the size of the peaceful protests, it received a total of 15 seconds of coverage from the top three television networks, according to the coalition's website.

"The liberal media's consistent censorship of the annual March for Life is nothing short of shameful. We will hold the media accountable if they continue to ignore the hundreds of thousands of pro-life advocates who march for the unborn every year," said Rep. Alex Mooney, R-W.Va.

With less than two days until the march, organizers have urged concerned supporters to tweet #CoverTheMarch at media outlets.