Question

Question #df921

Answer 1

High unemployment.

Explanation:

Economic factors are usually the underlying causes of most bigotry and racism.

"Economics" broadly interpreted is simply trying to improve our living conditions. It is always a "moving target" and disparities are often attributed to either favoritism or excessive liberality.

"Elites" are railed against by those perceiving themselves as "held back" from opportunity by those elites, and different social or ethnic groups are commonly vilified for a perceived lack of opportunity for any particular other social or ethnic group.

Thus, as reported in many newspapers of the time, the economic conditions and unemployment of native ethnic Germans were interpreted by some as the result of immigration excesses and neglect of "native" German people.

The Titles or Labels of these groups doesn't really matter. It is always a homogeneous group (usually by ethnic lines) acting out hostility to other groups on whom they place the blame for their discomfort.

One example:
http://www.npr.org/2012/10/11/162663914/with-a-database-germany-tracks-rise-of-neo-nazis