I read those sections and I think the author wants to focus on supporting his thesis that Americans hate each other; thus he repeats examples of divisive rhetoric that have been used by political, news, and social media in recent years. All of this addresses supposedly inherent hatred among Americans, as if it's a result primarily of social anger, rather than anything else (like income inequality, which he saves for the end of the article, as a footnote to his main ideas). What he doesn't appropriately address is the undeniable and deep problem of income inequality. We should consider why he wrote this article. For example: do most Americans hate one another? No. Indeed, this article fits neatly within what /u/Jesus would call an intentional attempt by Zionist media (and Russian media) to stir up hatred and dischord in the US. There are academic studies of this approach by Russian sources, showing that they're focused on getting readers to fight over facts and extremes, the result of which is the election of authoritarians like Trump, who we know was compromised by Russian businessment to do whatever they wanted him to do (where possible). Where in all of this does Zionism fit? Much of what Israel and pro-Israel lobbies in the US focus on is sowing dischord among non-Jews, which helps with their right-wing political aims. One of the ways they do this is to make people believe statements like this:

If there are higher levels of 'racism' in America than in Europe, then it is because there is more ethnic diversity

This is not true for many important reasons. I've already discussed them on Saidit, but in a nutshell, my argument is that we should look at this historically. For example, ethnically diverse settlements around the Mediterranean over the past 4000 years, particularly in metropolitan centers, have resulted in great progress for those groups. Central to that success was trade. Those who don't want this to work have used their power to manufacture dischord and thereby control their sources of wealth while others are distracted with the dischord. What's partially ironic about this today is that the Jews who were expelled from those Mediterranean regions periodically over a period of 4000 years (thanks in part to their abuses of others) have been since the early 19th century using some of the strategies of those in power to sow dischord and thereby take control of important sectors in societies (banking, pharma, healthcare, entertainment, politics, etc.), from the Rothschilds to the present. The writer of that article agrees with this approach of sowing dischord. Ethnic diversity was never a problem. Money was the primarily problem, especially for the economically disadvantaged blacks and hispanics (and whites) who've been recruited or forced into crime because they had no other way of earning money, other than to clean toilets or pick strawberries. When the lower income people react to this - because of the absence of upward mobility in society - there is racial tension. Yes, people inherently dislike the 'other', but they are prompted to act on their hatred when they are miserable and have no money.