Conservative groups and individuals are noticing that the reach on their Facebook pages has dropped dramatically in the last couple months – and some are saying it's not by accident.

Twice in one week last month, Pastor Rich Penkoski had videos from his "Warriors for Christ" Facebook page removed from public view within seconds of him posting them.

"However, if you go into the video section, [which I can do] as the administrator of the page, I can see the videos – and it still shows as if it's running live," he explains – "but the public cannot see it," he adds.

The result? His thriving online ministry has been silenced. "We were getting thousands and thousands of views per post. Now we're lucky on some posts if we get 50. And we have 12,500 followers on this new page," he shares. (See earlier stories involving Pastor Penkoski)

Jim Shempert, who manages the Facebook account for OneMillionDads.com, has seen similar drops. "My average daily page reach – 12,000, 9,000, 6,000, 4,000 – you bring that forward to right there: 148," he says, reading from an online stats page.

Hundreds of people are reporting the same thing on the web, and Shempert believes it's not a coincidence. "The people behind the scenes at Facebook? There's IT people who can make things happen, and it's very simple in the fact that they are suppressing conservative content." Shempert should know – he's also the IT manager for the American Family Association.

Charges of algorithm changes, shadow banning, and bias have been flying all around the social media giant. Kyle Drennen of Media Research Center told American Family Radio host Bryan Fischer that Facebook has to come clean.

"We need transparency from these tech companies," he said. "[We need to ask] How are you determining what is fake news or hate speech or any of these definitions? When you make a decision to pull content or to restrict how many people can see certain content, how are you making that determination?"

Last month, the social media platform released new rules and guidelines used by its content monitors. RedState reported that "most of the guidelines remain unchanged" – and that the release "seems to be part of an effort to quell growing criticism of Facebook's 'hidden agenda' and secrecy."