Well, Donvict was clearly worked up over Obama Presidenting While Black - it was obvious from all his stupid racist birther bullshit.
Sure, he wasn't the only one (anyone remember Orly Taitz, LOL?) but he quickly became the spearhead for the racists that were so GRRRR MAD that a black man was their President and tried to make their white hot racist rage all about long form birth certificates. It seriously broke the brains of the Republican Party/conservatives to have Obama as their President. I mean, they were already bad before, but after Obama, they only got worse. When conservatives blame Obama for their turn to someone as shitty as Donvict as their option, they are not exactly wrong, but they are not really understanding that they are telling on themselves.
Someone as disgusting and gross and racist like Donvict was almost bound to happen as a result of having a black President. Also, after the China White of someone like Palin, they were not going to settle for the methadone of Jeb! or Romney.
They wanted someone that would tell them to be their worst selves and be proud of it, because this country was "taken" from them and they need to "take it back". They viewed equality as oppression. They wanted someone that was the manifestation of Faux News, and Donvict is exactly that.