@spooky24,
It is dangerous for minorities when a "charismatic leader" espouses a general disrespect for a large group of people based on their religion, nation of origin, or other identifying characteristics. Trump has done this to Mexicans, Muslims, disabled people, blacks. and Asians. As a result, his rallies have turned into mob scenes where members of these groups are physically attacked.
Here is a list of some of the things he's done and said:
It has been more than a quarter century since Trump took out ads in New York newspapers calling for the death penalty for “criminals of every age” after five
black and Latino teens were implicated in the Central Park jogger case. The young men, convicted and imprisoned, were
later cleared by DNA evidence and the confession of a serial rapist – and Trump called their wrongful-conviction settlement a “disgrace.” (Because he wanted them burned. He has no value for blacks and Latinos.)
Since then, Trump led the “birther” movement challenging President Obama’s standing as a natural-born American;
used various vulgar expressions to refer to women;
spoke of Mexico sending rapists and other criminals across the border;
called for rounding up and deporting 11 million illegal immigrants;
had high-profile spats with prominent Latino journalists and news outlets; (deeply insulting their culture. I was embarrassed.)
mocked Asian accents;
let stand a charge made in his presence that Obama is a Muslim and that Muslims are a “problem” in America;
embraced the notion of forcing Muslims to register in a database;
falsely claimed thousands of Muslims celebrated the 9/11 attacks in New Jersey;
tweeted bogus statistics asserting that most killings of whites are done by blacks;
approved of the roughing up of a black demonstrator at one of his events;
and publicly mocked the movements of New York Times (and former Washington Post) journalist Serge Kovaleski, who has a chronic condition limiting mobility.
Hitler didn't like these groups, either.
You can see video of Trump mocking a disabled man here.
https://www.washingtonpost.com/opinions/donald-trump-is-a-bigot-and-a-racist/2015/12/01/a2a47b96-9872-11e5-8917-653b65c809eb_story.html
Here's Trump getting his Heil Hitler salute.
http://www.bustle.com/articles/146135-donald-trump-asked-his-supporters-to-do-this-incredibly-creepy-thing
Hardly "nothing."