Of couse every ethnicity has undesirables. If we didn't have African American ghettos some other group would be occupying that spot. There's always a "bad guy/group". It's always been that way and it always will be. Society needs to look down on someone.
Ive been around enough Chinese and ive seen the restaurants, massage and nail palors that double as work prisons. I've seen the three bedroom homes that house 15 adults. Everyone has their issues.
Which other ethnicity can boast numbers like these?

But I'm sure things have improved since 2009.
Oh wait,
Donald J. Trump @realDonaldTrump
Crime and killings in Chicago have reached such epidemic proportions that I am sending in Federal help. 1714 shootings in Chicago this year!