Lucky for us New Discourses has the definitions we need to do this.If they truly hated the working class then they wouldn't be supporting all these social programs. The claim that the working class is naturally fascist needs to be substantiated.
Fascism, as defined under social justice, is "anything that supports or maintains oppression, or that could possibly be used to do so if authoritarianism were to arise" source.
Any working class person who supports "neoliberalism, capitalism, corporatism, conservatism, police, order, civil society, science, liberalism, individualism, [and] meritocracy" are fascist. Fascism, when used by anti-fascists, also extends to those are complicit in all of these thing, complicity being defined broadly as anyone who uncritically benefits from systems of oppression, source. Critical is defined as "be aware of and resist (systemic) power and disrupt established systems and ways of thinking" source.
These systems of oppression are named above, and you can see one of them is capitalism. Therefore anyone who benefits from capitalism and isn't critical of it is complicit and therefore a fascist. Any working class person who makes enough money at their job to live somewhat comfortably and doesn't seek to destroy their livelihood is a fascist. I would say this covers the vast majority of working class people. You can see the small leap it takes to call working class people naturally fascist when people naturally don't want to destroy their livelihood.
The connection between white/whiteness and fascism is even shorter.