You genuinely don't win friends with salad. Or conversations about politics!
I agree with you in terms of the news - stories come and go. Celebrity super-injunctions, serial killers, whatever, they all have one individual or a small group as the focal point and a particular issue that makes it newsworthy (or not, in most cases!).
With the likes of the Mail, Sun and Express though, it's shallow rhetoric and often founded in selective truth or outright lies. It's aimed at broader groups of people, and the definitions have very fuzzy edges - "Migrants", "Remoaners". It's death by a thousand paper cuts, as the "facts" of each story become irrelevant and forgotten but the more bullshit that's piled on, the harder it is to get the stench out.
The division is intentional too. As humans, we love an escape goat (go on, treat yourself to some pedantry there ;)) and so these outlets are on the one hand showing people how tough their lives are, and on the other giving them someone to blame - all the while diverting attention away from the corporate pigs who are really pulling all the strings.
We're living in a post-facts world, where yesterdays news is now also yesterday's fish and chip paper, and the headlines are all that matters.