the birth was the 60s. And even then, most of what became hiphop is just older black american culture before that. People like to lie and say the creation of hiphop was the late 70s or early 80s because then they can claim "Latinos were there from the beginning". When they joined later on after hiphop was up and running. (edit: i thought you were the other poster that posted about Caz) And you posted about Caz, Caz even said latinos called hiphop "Jungle bunny music". Sure he might have been in a group where the let a latino join, but again involved is not created.The early 70's was the "birth." The late 70's/early80's was the "development." Latinos were there during the "development." Lets not act like the 70's and 80's were the same. Once the transition into making actual records for radio came into play in 79 Hip Hop went into a different direction. Wasn't no graffitti during the birth either that came during the development but you never hear anyone going "but but but Graffitti wasn't originally a part of Hip Hop" like ya'll do with Latinos. Prior to the late 70's graffitti had it's own culture before being intertwined with Hip Hop.
And like i said, at this point you're going to need more definitive proof than just saying "50/50" repeatedly.