read the link - ridiculous.  cultural appropriation - yes.  but the culture it represents is not just black, it represent a lot of the precepts of Rastafari practices which is a philosophy and a religion - they believe the bible says to not cut one's hair, Hasidic jews also have locks down the sides of their head based on the same interpretation.  you could make the argument that the american  black population "borrowed" the style from the Jamaicans...at first being a statement of being mellow and in solidarity to the use of pot.... as did the white population at the same time, to make the same statement..  
  I went to see  "the harder they come" in santa monica in 1975(?) with a black boyfriend.  into the movie a bit when the rastas come on, he couldn't sink deep enough down into his seat - he was mortified...culturally , to let someone's hair get that way was bad.  then he heard all the white people singing with the movie and we both laughed... me at him and he at the situation.