The McLaren driver was given two drive-through penalties following incidents with Ferrari's Felipe Massa and Williams' Pastor Maldonado during Sunday's race, won by Red Bull's Sebastian Vettel.
"It's an absolute ... joke," Hamilton told the BBC. "I've been to see the stewards five times out of six this season.
"Maybe it's because I'm black. That's what Ali G says," Hamilton added, in reference to the fictional television character made famous by comedian Sacha Baron Cohen.
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| Hamilton. - AP |
But Hamilton later said he had been to see the stewards to "make peace" following his remark.
"What I said was a bit of a joke, which wasn't funny at the time," Hamilton told Britain's Press Association.
"I made them aware that when emotions are high, and it's very intense at the end of those kind of races, you don't always say the right thing, and the joke didn't come at the most appropriate time."
Motorsport's governing body, the FIA, did not immediately react to Hamilton's comment, but the 26-year-old Englishman said the stewards had assured him they would "clarify it with (the FIA) and it won't go any further than the meeting room."
Hamilton was given his first drive-through penalty for the collision with Massa. The second was handed out retrospectively after he came into contact with Maldonado late in the race.
He was given a 20-second penalty, but it did not affect his race position of sixth, as Force India's Adrian Sutil was a lap behind him in seventh.
Hamilton, who was also demoted from seventh to ninth on the start grid for cutting a chicane in qualifying on Saturday, felt Massa was the driver to blame in the first incident.
"Massa held me up in qualifying, I got the penalty," he said. "He turned into me (during the race), I got the penalty. These drivers are ridiculous. It's stupid."
Hamilton is the only driver to have beaten Vettel in six races this season, outwitting the German in China, but he is 58 points behind Vettel in the championship standings.
"I'll just try and keep my mouth shut and try to enjoy the rest of the season," Hamilton said.
