I am in Canada, but I think it is the same in the US? A newspaper can be responsible here. For example, if they say "people should riot" and a riot happens, the newspaper could be responsible for all actions that resulted the same as if they were the ones doing the crime.

Same with if they become aware of defamation and fail to retract and make a statement. But newspapers will generally also thoroughly investigate themselves to make sure what they are publishing is true.

It is not the same in the U.S. (And, to be honest, I'm quite doubtful this is true in Canada, though I could be persuaded through legal citations that it is.)