It's a simple fact: An Arabic or black african male taking photos on an airplane will not be broadly viewed by the public at large in the same manner as a caucasian teenage female doing the same thing.

Now the other fact is, there was a disturbance - which itself justifies removing the man from the flight. We don't really know what caused the disturbance - was it the result of the passenger's failure to comply with reasonable requests of the flight crew, or was it that the man, while taking an innocent selfie, was confronted by paranoid racially profiling passengers or crew and took umbrage at that? Unless this question is answered, we simply can't make a judgment on the specifics of this case.