Well... no, it's not only possible this way, as I just tried to point out. With or without global news programs, with or without addictive news feeds, those people will still act that way and go to great lengths to find reasons to justify it.
I did not engage with other bits because I do not generally disagree with you: watching too much news is a problem, highly addictive news feeds are a problem. I just do not believe those problems are the source of every issue we face, particularly racism - and I don't believe that solving those problems would solve those issues in any impactful way.