Fuck Jordan Petersen!
There are good reasons for the working classes to do the difficult job of resolving internal differences and working together against the common enemy: the owners of capital!
It's the capitalists who use and exacerbate identity differences by race, language, gender, ethnicity and culture, and sexual orientation, to divide up the working class into manageable chunks. A useful American example of how the rich deliberately try to set one group of common people against another, was the "Hiring in Thirds" practice of coal mine owners in Kentucky and West Virginia at the turn of the 20th century. Thirds meant that the managers were instructed to recruit one third of miners from the local white hillbilly population, one third blacks and one third foreign east Europeans who could not speak english. The owners thought that they could stop any attempts to form unions in their mines...but along came John L Lewis...and the rest is history!
When capitalism is in crisis...which is sure is today, then the leaders of capitalist nations give up the facade of democracy and freedom and transition to fullblown fascism..which they are doing today in American and all across Europe! As long as the ruling classes have a dependable proletarian group that they can keep loyal to them and do their dirty work(brown shirts etc.) they don't give a crap or worry about what the majority think! When it's about tyrannizing the majority, a useful minority(even 10%)will do the job of running the fascist state. Prime example for me was after Franco finally died and Spain had its first democratic election since the 30's, Franco's Falangist Party only won 8% of the popular vote! The thousands of candle-holding vigil keepers when the old bastard was on his deathbed(forever)vanished as soon as he was dead and buried and the restored King refused to allow his party maintain control of government and the military.
So, rise up against your masters, you have nothing to lose except your chains!