The photo of two Storm Troopers "marking" a Jewish business during the Nazi party boycott of Jewish businesses which began in April, 1933, after Hitler became Chancellor of Germany. 

https://encyclopedia.ushmm.org/content/en/article/boycott-of-jewish-businesses 

The sign reads:  "Germans! Defend yourselves! Don't buy from Jews!" Berlin, Germany, April 1, 1933

Law for the Restoration of the Professional Civil Service

Immediately after the economic boycott began (April 1, 1933), the Nazi government instituted the Law for the Restoration of the Professional Civil Service which excluded Jews from all civil service positions

https://encyclopedia.ushmm.org/content/en/timeline-event/holocaust/1933-1938/law-for-the-restoration-of-the-professional-civil-service

Lat April brought legal restrictions on Jewish attendance at public schools and universities and in May, book burnings began.