As much as I love Zig Forums (seriously, this is one of the smartest online communities ever, especially for a board on a shit-posting website), it's seriously counter-productive in how a lot of the people here think that identity-politics doesn't have any relevancy whatsoever.
If you want to build up class-consciousness and solidarity among the working class, you need to pay attention to the individual groups within it.
You need to look at groups such as women, black people, trans people, gay people, the problems and discrimination these groups each individually face, and see how they are at least in part directly tied to the power-structures created under capitalism.
The oppression of women turns them into a reserve-army of labor, and helps maintain the traditional nuclear family, which is used to efficiently create and raise new workers.
White supremacy allowed for slavery, which was an integral building block for capitalism as we know it today. It's still relevant due to how it is currently being used to justify fascism on the alt-right, which seeing as fascism comes about when capitalism is being threatened by socialist revolution, will seriously hurt us if we don't address it.
Transphobia, homophobia and anti-semitism is exploited by politicians in order to give people a weaker enemy to blame for their problems rather than capitalism.
And for god's sake, while capitalism should be our primary concern, not all oppression in the world is because of economic class!!!!!!
These different models of oppression aren't going to just disappear after we have gotten rid of capitalism.
A hardcore racist for example isn't just going to simply stop thinking that black people are violent killers just because he no longer has to worry about paying his bills.
But even if you personally don't care about feminism, lgbtq+ activism, e.c.t at least ask yourself this.
Why would a member of any of these oppressed groups care about taking part in and even dying for a socialist revolution if they're just going to continue to be screwed over by other oppressors, therefore not really having a stake in the revolution?
If you want to build up solidarity with the working class, embrace identity politics.
While the alt-right is focused on pushing so many groups of people out, it shoots itself in the foot as it looses so many potential supporters in order to maintain "racial purity" within itself.
We can pull these excluded groups into our movement, and we will grow massively because of it.
And finally, have you ever thought about how the mass hatred of "SJWs and feminazis" (which on a large scale this stereotype isn't actually present in real people anywhere) could just be something which was made up through the bourgeois cultural-hegemony in order to make activists seem like stupid, crybaby reactionaries?