There are many dysfunctional and criminal subcultures in America, as there are everywhere. In the US, these are overwhelmingly white of course, and, it seems, disproportionately low among American Asians and Muslims (except for the Somalis in Minneapolis). They need to up their stats to keep up.
American blacks, however, have a lock on violent crime, with Hispanic immigrants (mostly gang-related) coming in as a distant second. Why this has evolved this way I do not know. History tells us it was not this way in 1960.
I do business with plenty of black and hispanic Americans, and they are fine, hard-working and pleasant people. There is almost no racism in America as far as I can tell. None. There is far more bigotry against white tattooed meth heads, white beggars, and whites with nose rings.
In the USA, there is a social contract. Obey laws, aspire to independence and integrity, and be a good contributing citizen. That is all that is required. Otherwise, expect to be poorly-regarded.