1- Open your Facebook application.
2- Click on the 3 line, at the top right corner of the screen.
3- Click on Setting.
4- Click on Blocking.
5- Click on “ADD TO BLOCKLIST”.
You can see this list is empty now.
6- In the search bar write “Fact checker”.
7- You can see a list of fact checkers you should block them one by one.
8- When you block all of them click on back arrow.
9- Now you can see the block list is not empty and names of all fact checkers are in your list now.