A denied visa for whom? Zafar was a US citizen attending UAG on a student visa from the Mexican government. He didn't personally need a visa from the US government.
Zia Zafar was from India originally. I wonder what his religious affiliation could be? (Zafar doesn't sound like a Hindu name.)
There is definitely a fair amount of BS in the air with this guy. It sounds like he is claiming to have done this out of some political motivation but it looks like there may be personal motivations, like that he seems to be a loser that not even the terrorists will claim.