It’s time to call the whole “Bernie Bros” phenomenon exactly what it is – racist, sexist, homophobic propaganda.     I don’t mean that Bernie Sanders’ supporters are any of those things.     I mean that the term used to lump us all together is.     There is no monolithic group of angry straight men backing the Vermont Senator’s bid for the Democratic nomination for President in 2020. Nor was there in 2016.    A substantial portion of…