Washington, June 4 (IANS): Democrat front-runner Hillary Clinton said her rival and Republican Party's presumptive presidential candidate Donald Trump wants to be a "dictator".

"We are trying to elect a president, not a dictator," she said at a campaign rally in San Bernardino, California on Friday, ahead of the crucial California Democratic primary slated for June 7.

According to sources, after day of ripping into Trump over his comments on immigration and his repeated insistence that an Indiana-born judge would not treat him fairly because of his Mexican heritage, the comment was Clinton’s starkest yet, Politico reported.

In the rally, Clinton let loose on Trump, questioning not only his qualifications, but his sincerity.

“I don’t understand Donald Trump running a whole campaign based on nothing but denigrating immigrants,” she said, pointing out that Trump, whose mother was Scottish and whose wife is Slovenian, has family that came over to the US from abroad. 

“Is this nothing but a political stunt?" she added.