(TMZ) -- Akon thinks the guy holding the "Blacks for Trump" sign at his Phoenix rally has sold himself -- and the black community -- out for a quick buck ... not unlike the rest of the GOP.

TMZ got the singer at LAX, and he gave us his two cents on Maurice Symonette ... the lone black dude behind Trump on Tuesday ... and he thinks it's a case of sell-your-soul ... a game he also believes is being played by other Republicans to protect Trump.

It doesn't sound like Akon knows about Symonette's past -- or his current political philosophies -- and it's interesting that he tries painting him as someone who only supports Trump for an alleged payoff. 

Still, he makes a good point about what the country is looking like these days -- a state of affairs he usually sees outside our borders.

Photo: AOL