How Did the Shift From One Racial Zed Labor Migration Regime to Another Take Place?

The shift from radical labor cosmopolitanism of the anti colonial era to an even more diverse ports work force that's deeply segmented along national lines and politically marginalized. How did that shift from one racial zed labor migration regime to another take place? So passports and border control have always been incredibly effective means of attenuating and containing forms of labor, transnational labor mobilization and solidarity. That as a very deliberate shift that happens at the end of the 19 sixties and early 19 seventies.