Why many people willing to blindly believe the ideologies nor being rational?

In fact, the right way to correctly interpret a media’s news report is to understand the Media’s political positions, the journalists or editors’s background is more important than what the news report itself reporting.

However, there are some people blindly to believe any news report only based on the content, but not to interpret the purpose of the report or to understand the background of the media, journalists, and editors.

Do you think ideologies is good or bad? Media as a public communication channels, should media purify News before publish?