Donald Trump gestures as he arrives at his campaign rally

Scuffles broke out after protesters waving an “Immigrants Built America” banner disrupted Donald Trump’s latest rally, where he continued his racist attacks on congressman Eljiah Cummings, the City of Baltimore, and "the squad".

The demonstrators held up the US president’s speech for nearly four minutes before they were kicked out of the event in Cincinnati, Ohio. But, the moment was only blip in the president's campaign rally where he offered up a flawed understanding of American immigration policy, trashed the idea of an independent judiciary, and slammed California for having homeless people and poverty.

Mr Trump, who appeared to make an obscene gesture as they left, also promised to cure childhood cancer, mocked FBI investigator Robert Mueller and boasted about the trade war with China – despite warnings from one of his former advisors, Gary Cohn, that it is damaging the US economy.