The Republican candidate was speaking near Milwaukee, which has seen violent protests in recent days
Donald Trump has accused Hillary Clinton of "pandering" to African-Americans only because she wants their votes in the presidential election.
Mr Trump said: “We reject the bigotry of Hillary Clinton which panders to and talks down to communities of colour and sees them only as votes. That’s all they care about."
The Republican candidate was speaking at a rally in Wisconsin.
Milwaukee, the largest city in the state, has seen violent protests in recent days after the death of a man who was shot by police.
City officials have introduced a 10pm curfew for teenagers in a bid to cut down on the protests.
Mr Trump said the city has "so many problems", and that "the violence, riots and destruction that have taken place in Milwaukee is an assault on the right of all citizens to live in security and peace."
He added that "law and order must be restored. It must be restored for the sake of all, but most especially the sake of those living in the affected communities."
Mr Trump also argued that "Hillary Clinton-backed policies are responsible for the problems in the inner cities today, and a vote for her is a vote for another generation of poverty, high crime, and lost opportunities".
He further accused Mrs Clinton of being "against the police", adding that "the war on our police must end".