Bro is mainly used today by young white guys that think they are cool. I'm guessing it is said to each other because they cant say n***a like us black people.
Black male to black male: Whats up my n***a?
White male to white male: whats up bro.
White male to black male: whats up bro.
Lunatic right-wing assholes' favorite pastime is blaming others for their own shortcomings. Red States are banning Drag Queen Story Hour and conflating drag with being Transgender, which are, of course, not the same. Either way, #NotADragQueen gets to trending on Birdapp when some RW dingus gets arrested for sexually assaulting minors; general sex-trafficking; or any other violent, illegal offense they blame drag queens for.