Is there a word for the way bad ideas occur in the public sphere more frequently than their good alternatives?

I wanted to do some research about the origin of organic molecules, so I typed "origin of DNA" into a search engine. The vast majority of hits were sites supporting creationism or intelligent design. It would lead you to conclude that the scientific consensus leans toward creationism/ID.

I was also recently researching a political attack. (I won't specify the charges or which side of the aisle they came from.) After some exhaustive searching, I found that the attack was pretty groundless. Still, simply searching for the key terms in google brought up dozens of sites repeating the same attack compared to only a handful that had the reasonable explanation. Just to rule out partisan bias, I found the same thing when I looked at a groundless political charge lobbied from my side toward the other -- lots of repetition of the charge but only a little bit of the perfectly valid rebuttal.

Is there a name for this phenomenon? Have you noticed it too? Do you think it's dangerous?